**Shenandoah-Dives Mill**

### 

### Prerequisites for U.S. World Heritage Nominations

An application for a property that does not meet all of the
prerequisites A through G, or for which answers are uncertain, should
not be completed or submitted. Such a property cannot be legally
considered. If you are in doubt about the answer to all these questions
being anything other than "yes," please contact the World Heritage
Advisor at the address and phone number provided for further guidance.

**Prerequisite 1 - Legal Requirements:**

**A. National Significance:**

Has the property been formally determined to be nationally significant
for its cultural values, natural values, or both (in other words, has it
been formally designated as a National Historic Landmark, a National
Natural Landmark, or as a Federal reserve of national importance, such
as a National Park, National Monument, or National Wildlife Refuge)? If
not, are there on-going processes to achieve any of the above
designations and what is their status? *(Listing in the National
Register of Historic Places is [not]{.underline} equivalent to National
Historic Landmark status.)*

YES: \_\_X\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_Designated in
2000\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**B. Owner Concurrence:**

Are all the property owners aware of this proposal for the inclusion of
the property in the U.S. Tentative List and do all of the property
owners agree that it should be considered? If any agreement is uncertain
or tentative, or if the ownership situation is disputed, otherwise
complicated, or unclear, please explain the issues briefly.

YES: \_\_\_\_X\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**C. Willingness to Discuss Protective Measures:**

If the property is nominated to the World Heritage List, it will be
necessary for all of the property owners to work with the Department of
the Interior to document fully existing measures to protect the property
and possibly to devise such additional measures as may be necessary to
protect the property in perpetuity. Are all the property owners willing
to enter into such discussions?

YES: \_\_\_\_X\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**D. Scheduling:**

If you wish a property to be nominated to the World Heritage List in a
particular year during the period 2009-2019, please indicate the
reason(s) why and the earliest year in which you feel it will be
possible to meet all requirements for nomination*. (Please review this
entire **Questionnaire** before finally answering this question.)*

Preferred Year: \_\_\_\_\_\_\_\_\_2009\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Reasons: We have met the qualifications.

**Prerequisite 2 - Specific Requirements for Nomination of Certain Types
of Properties:**

**E. Serial (multi-component) Properties:**

If you are proposing a nomination that includes separate components that
could be submitted separately over several years, do you believe that
the first property proposed would qualify to be placed on the World
Heritage List in its own right?

*Explanation: There will be a very limited number of sites nominated
over the next decade. Owners of similar properties likely will be
encouraged to work together to present joint proposals for serial
nominations. An example would be a proposal to nominate several
properties designed by the same architect. It is critical to note that
the first property presented in a serial nomination must qualify for
listing in its own right.*

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_N/A\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**F. Serial (multi-component) Properties:**

Are you proposing this property as an extension of or a new component to
an existing World Heritage Site?

YES: \_\_\_\_\_\_\_ NO \_\_\_X\_\_

Name of Existing Site:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Prerequisite 3 - Other Requirements:**

**G. Support of Stakeholders**

In addition to owners, please list other stakeholders and interested
parties who support the property's proposed inclusion in the Tentative
List. Also note any known to be opposed.

*Explanation: The purpose of the Tentative List is to propose candidate
properties that are likely to be successfully nominated during the next
decade. It is clear that a consensus among stakeholders will be helpful
in nominating a site and later in securing its proper protection. Thus,
only properties that enjoy strong, preferably unanimous, support from
stakeholders will be recommended for inclusion in the U.S. Tentative
List.*

*In addition to owners, stakeholders primarily include:*

*\--Governors, Members of Congress and State legislators who represent
the area where the property is located,*

*\--the highest local elected official, or official body, unless there
is none,*

*\--Native Americans, American Indian tribes, or other groups and
individuals who possess legally recognized claims or privileges in the
area or at the site being proposed (e.g., life tenancy or hunting and
fishing rights),*

*\--organizations established to advocate for protection and appropriate
use of the property proposed for nomination.*

*If definitive information is not available at the time you filled out
this Questionnaire, please so indicate.*

Supporters:\_\_\_see letters of
support\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Opponents:\_\_\_\_none that we know
of\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Information Requested about Applicant Properties**

**(The numbers of the sections and subsections below are in the same
order as and correspond to sections of the World Heritage Committee's
official [Format]{.underline} used for the nomination of World Heritage
Sites. This is to allow easy reference to and comparison of the
material.)**

**1. IDENTIFICATION OF THE PROPERTY OR PROPERTIES**

**1.a. Country:**

If it is intended that the suggested nomination will include any
properties in countries other than the United States, please note the
countries here.

*Explanation: Please note that the United States can nominate only
property under U.S. jurisdiction. You are not expected to contact other
governments and owners abroad, although you may do so if you wish. Each
national government must nominate its own sites, although the United
States will consider forwarding your suggestion to another government
for that government to consider as a joint nomination with the United
States.*

Names of countries:\_\_\_\_\_\_\_United
States\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**1.b. State, Province or Region:**

In what State(s) and/or Territories is the property located? Also note
the locality and give a street address if one is available.

\_\_135 County Road 2, Silverton, CO.\_\_(2 miles N.
Silverton)\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**1.c. Names of Property:**

What is the preferred or proposed name of the property or properties
proposed for nomination? If the site has multiple names, explain why you
chose the primary choice or choices. (*The name should not exceed 200
characters, including spaces and punctuation.)*

\_Shenandoah-Dives Mill\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***Popular and Historic names***

What are any popular or historic names by which the property is also
known?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_Mayflower
Mill\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***Naming of serial (multiple component) properties and transboundary
sites*.**

Try to choose brief descriptive names. In the case of serial
nominations, give an overall name to the group (e.g., *Baroque Churches
of the Philippines*). (*Give the names of the individual components in a
table that you insert under **1f.)***

Group or Transboundary
Name:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***Other names or site numbers***

*Explanation: If a site has multiple names, explain why you chose the
primary choice or choices. If the site has no common name or is known
only by a number or set of numbers, please explain.*

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**1.d.-e. Location, boundaries, and key features of the nominated
property**

Include with this **Application** sketch maps or other small maps,
preferably letter-size, that show:

\- the location of the property

\- the boundaries of any zones of special legal protection

\- the position of major natural features and/or individual buildings
and structures

\- any open spaces (squares, plazas) and other major spatial
relationships (the space between buildings may at times be more
important than the buildings)

Please provide here a list of the maps that you have included.

Location map

Plat map

Site map

Flow sheet

**1.f. Area of nominated property (ha.)**

*Explanation: State the approximate area proposed in hectares (1
hectare=2.471 acres). Give corresponding acre equivalents in
parentheses. Insert just below this question a table for serial
nominations that shows the names and addresses of the component parts,
regions (if different for different components), and areas.*

**\_\_\_\_\_6.05\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**2. DESCRIPTION AND HISTORY OF THE PROPERTY**

**2.a. Description of the Property**

(select the one following category that best fits the property)

###### Cultural property

Briefly describe the property and list its major components. A summary
in a few paragraphs or pages should be all that is required.

*Explanation: This section can describe significant buildings, their
architectural style, date of construction, materials, etc. It can also
describe the setting such as gardens, parks, associated vistas. Other
tangible geographic, cultural, historic, archeological, artistic,
architectural, and/or associative values may also merit inclusion.*

The Shenandoah-Dives Mill, near Silverton, Colorado is located within
the famous San Juan Triangle mining center of southwestern Colorado,
which also includes the historic mining towns of Telluride and Ouray,
and encompasses one of the most richly mineralized areas of North
America. Fourteen thousand feet mountain peaks tower over the mill,
which sits at the bottom of Arrastra Gulch in Baker's Park on the Animas
River. The mill has retained an exceptional degree of historic integrity
largely due to its isolation, due to its distance from major population
centers, altitude, and severe winter climate. Currently, approximately
450 people reside year-round in Silverton.

The Shenandoah-Dives Mill is an exceptional example of early
twentieth-century American flotation mills. The multi-level, wooden mill
is 90' x 252' x 106' x 252' and in 1929 was classified as large
industrial. Prominent features of the mill site include the mill,
crushing plant, office/assay building, tram terminal, lime shed, and
decantation ponds. The type of flotation technology used in the mill is
nationally significant due to its role in diverting a crisis in the
mining industry at the turn of the century.

Nearby Silverton was designated as a National Historic Landmark (NHL) in
1961. The boundary was established in 1975, and encompassed the town
limits of Silverton, approximately 530 acres. The 1961 NHL designation
recognized the district for its mining heritage and vernacular
architecture. In 1996, in an effort to preserve Silverton's mining
heritage, the Sunnyside Gold Company donated the Shenandoah-Dives Mill
complex, commonly referred to as the Mayflower Mill due to its
association with the Mayflower Mine; the historic Animas Power and Water
Company buildings and structures; and Crooke's Polar Star Mill Office to
the San Juan County Historical Society. The historical society opened
the mill as an interpretative center in 1997. The integrity of the
Shenandoah-Dives Mill is exceptionally high due to its historic mining
location and setting reflecting the feeling and association with the
mining industry in the twentieth century. The resource reflects the
style, type and method of construction recognized in mining sites across
the West, but more importantly the flotation technology within the mill
reflects an exceptionally intact flow pattern of early twentieth-century
flotation milling.

With the imminent depletion of the quantity of the world's rich ore
supply at the end of the nineteenth century, the mining industry faced a
severe crisis. An innovative process known as flotation diverted the
crisis. In 1912, flotation was introduced to the American mining
industry. The evolution of the flotation process significantly impacted
the industry when flotation efficiently and economically concentrated
complex minerals that were practically impossible to treat by earlier
methods.

.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Which features or aspects of the property do you believe qualify it for
the World Heritage List?

In the nineteenth century, the mining industry realized they were
nearing an eventual depletion of the world's supply of high-grade ores,
ore bodies with a high percentage of a single metal. Rapid growth in
industry accompanied by an increase in use of natural resources was
depleting the World's high-grade metals supply. Compounding the problem
were the types of ores remaining. The crisis with which the mining
industry had to deal with in the 1890s resulted from the pattern
developing in many of the newly opened mines: the deeper they went
\[searching for high-grade ore\], the more complex and consequently more
difficult to treat the ore became. The cyanidation process treated
low-grade gold ores economically, but it wasn't until the flotation
process was discovered that low-grade and complex ores could be treated
efficiently and readily supply the world with base metals. .Flotation
enabled the mining industry to exploit complex ores that were virtually
impossible to treat profitably by earlier methods. Initially, miners and
the mining industry focused upon the highly valuable precious metals,
gold and silver. In the wake of the Panic of 1893, precious metals faced
a dreary future: the best high-grade veins had, for the most part, been
mined out. The question was how to find a more efficient means of
concentration to process these products. And it had to be found quickly.
Inventors in Australia, Great Britain, and the United States developed
through a series of experiments the process of flotation that could
concentrate low-grade ore. The process included crushing ore to a fine
powder, mixing it with chemically laden water, introducing bubbles to a
water bath, and minerals adhering to bubbles, which float to the
surface. The mineral-laden froth is scraped off and dried. In 1905, an
Australian mill unlocked the economical concentration process for
minerals (metallic and non-metallic) through flotation. The process, as
well as mill design, made flotation commercially viable. By 1912,
flotation was in use in the United States. The first two decades of the
twentieth century mark a period of growth and development in the mining
industry and with it the revolutionary application of new technologies.
Inventors in Australia, Great Britain, and later, the United States
designed and perfected extractive processes, crushing technology, and
milling operations. The Shenandoah-Dives Mill provides an extraordinary
vision of the development of mills in the first half of this century.
Building, technology, and collection of equipment have scarcely been
changed since the turn of the century, presenting a striking and rare
case of an early twentieth century flotation mill.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

What are the important present or proposed uses of the property and how
do they compare with the traditional or historic uses of it?

The San Juan County Historical Society received an endowment from
Sunnyside Gold Corporation with the donation of the Mill. Half of the
endowment was used to make the Mill into an interpretive center and tour
open to the public. The tour has been open on a seasonal basis since
1996. No alterations have been made to the Mill, but safety features and
visitor amenities have been added.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Cultural landscapes (*combined works of nature and humans*)**

Briefly describe the property and list its major components. A summary
in a few paragraphs or pages is all that is required.

\_\_\_\_\_\_\_\_\_\_N/A\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Which features or aspects of the property do you believe qualify it for
the World Heritage List ?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

What are the important present or proposed uses of the property and how
do they compare with the traditional or historic uses of it?

Consider how both natural and cultural processes have contributed to
creating the cultural

Landscape and give special attention to the interaction of humans and
nature. All major aspects of the history of human activity in the area
need to be considered.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

###### Natural property

Briefly describe the property and list its major components. A summary
in a few paragraphs or pages is all that is required.

*Explanation: This section can describe* *the property's important
physical features and scientific values, including geography, geology,
topography, habitats, species and population sizes (including an
indication of any that are threatened), and other significant ecological
features and processes.*

\_\_\_\_\_\_\_\_\_\_\_\_\_N/A\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Which features or aspects of the property do you believe qualify it for
the World Heritage List?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

What are the important present or proposed uses of the property and how
do they compare with the traditional or historic uses of it (e.g., to
what extent and by what methods are natural resources being exploited)?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Mixed property (one that meets at least one natural criterion and one
cultural criterion---see Section 3a just below for criteria)**

Briefly describe the property and list its major components. A summary
in a few paragraphs or pages is all that is required.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_N/A\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Which features or aspects of the property do you believe qualify it for
the World Heritage List?

What are the important present or proposed uses of the property and how
do they compare with the traditional or historic uses of it?

**2.b. History and Development of the Property**

*( select the one following category that best fits the property)*

**Cultural property**

When was the site built or first occupied and how did it arrive at its
present form and condition? If it has undergone significant changes in
use or physical alterations, include an explanation.

*Explanation: If the property was built in stages or if there have been
major changes, demolitions, abandonment and reoccupation, or rebuilding
since completion, briefly summarize these events. For archeological
sites, the names of archeologists and dates of their work should also be
noted, especially if the site is regarded as important in the history of
archeology as well as for its intrinsic merits.*

Constructed in 1929, the Shenandoah-Dives Mill processed ore for the
Shenandoah-Dives Mining Company mines in the Silverton area. The mill
was designed for milling metals from low-grade gold ore using alkaline
reagents in separation processes. Charles A. Chase's vision establishing
the most modern and up-to-date mining and milling operation in the
business was financially funded by a investors from Kansas City who
hired Chase as general manager in 1925. In addition to the mill complex,
the Shenandoah-Dives Company developed the mine site, which was located
on King Solomon Mountain. Here the company built a boarding house for
single miners, as well as those workers who did not live in Silverton.
The four-story boarding house included an underground entrance to the
mine enabling men to go in and out of the mine without leaving the
building in treacherous winter storms. A 9,526 feet long, steel aerial
tramway connected the mine to the mill. At its peak, the mill processed
from 750-1,000 tons of ore per day in a multiple circuit plant that
milled five metals: copper, lead, zinc, gold, and silver.

Examples of extraction, production, and technological advances are
reflected in the operation of the mill. The complex displays all of the
buildings and processes illustrative of flotation milling, including
conveyance to mill, conveyors, power source, water source,
administrative and operations office, machine shop (a complete inventory
of equipment), fully equipped metallurgical lab/assay office, storage
buildings, employee facilities, and conveyance to smelter (rail and
road). The entire complex is in exceptional condition. It is the only
extant mill that contains all of its original technological components,
such as flotation cells, classifiers, filters, and crushers (including
one Marcy No. 86 ball mill with its GE 250 horsepower synchronous
motor). The synchronous motor was one of only three made and it is the
only one in existence today.

In operation until 1992, the Shenandoah-Dives Mill contains virtually
all of its working components enclosed within a 1,000-ton complex. The
Shenandoah-Dives Mill was one of many mills that flourished in the first
half of the century. While not unique at its inception, the
Shenandoah-Dives Mill is now an exceptional surviving milling property.

*\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_*

**Cultural landscape**

What have been the major aspects of the history of human activity in the
area and their impact on the landscape?

***\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_***

**Natural property**

What are the most significant events in history or prehistory that have
affected the property? How have humans used or affected it?

*Explanation: This discussion can include changes in the use of the
property and its natural resources for hunting, fishing or agriculture,
or changes brought about by climatic change, floods, earthquake or other
natural causes.*

***\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_***

**Mixed property**

Consider the questions raised just above for both natural and cultural
properties.

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**2.c. Boundary Selection**

Propose a boundary for the property and explain why you chose it. Is the
boundary reasonable on logical grounds, such as if it conforms to
topography or landforms or (for natural areas) to the range of wildlife
or (for cultural properties) to any historical boundary or defining
structures (such as walls)?

The mill sits on three mining claims: H M Millsite survey \# 20595, E C
W Millsite survey \# 20595, "S" Millsite survey \# 20407, Animas Mining
District. That is the legal description for the Mill in the records of
the San Juan County Tax Assessor's office.

Are all the elements and features that are related to the site's
significance included inside the proposed boundaries?

*Explanation: Careful analysis should be undertaken to insure that the
proposal embraces the internationally significant resources and excludes
most, if not all, unrelated buildings, structures and features.*

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_X\_\_\_\_\_

If no, please explain:

It excludes the tailings ponds (holding ponds for the materials---mostly
silica---that were left over from the milling process) because they have
been reclaimed and are no longer contributing structures to the National
Historic Landmark District. At the time, the utilization of tailings
ponds was atypical for the mining industry as a whole. Generally,
environmental concerns were not at the forefront of the industry's
interests; profitable veins of ore were of greater concern. As a result,
the mill was one of a limited number of mining enterprises that employed
environmental, as well as cost-efficient, methods in their day-to-day
activities. Tailings from the Shenandoah-Dives Mill were directed to the
south of the plant and created four ponds over its years of operation.
During reclamation of the tailing ponds, bulldozers radically altered
the landscape of the pond site into two grassy knolls to the south of
the mill site.

Are there any enclaves or inholdings within the property and, if so, do
they contain uses or potential uses contrary to the conservation or
preservation of the site as a whole?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_X\_\_\_\_

If yes, please explain:
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**3. JUSTIFICATION FOR INSCRIPTION IN THE WORLD HERITAGE LIST**

**3.a. Criteria under which inscription is proposed**

From the World Heritage criteria listed below, identify each criterion
that you believe applies to your property and briefly state why you
believe each criterion you have selected is applicable.

*Explanation: You may find the discussion under this heading in
"Appendix A" to the **Guide to the U.S. World Heritage Program** to be
helpful in completing this section. Please refer to a paper copy or
follow the hyperlink.*

*To be included on the World Heritage List, a site must be of
outstanding universal value and meet at least one of these ten selection
criteria in a global context:*

i.  *represent a masterpiece of human creative genius;*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

ii. *exhibit an important interchange of human values, over a span of
    time or within a cultural area of the world, on developments in
    architecture or technology, monumental arts, town-planning or
    landscape design;*

> \_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

iii. *bear a unique or at least exceptional testimony to a cultural
     tradition or to a civilization which is living or which has
     disappeared;*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

iv. *be an outstanding example of a type of building, architectural or
    technological ensemble or landscape which illustrates (a)
    significant stage(s) in human history;*

> \_X\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_It is the finest example of the technological application
> of flotation milling of base and precious metals in existence.
> Flotation technology revolutionized the mining industry world wide in
> the first half of the 20^th^ century by allowing better recovery of
> metals so lower grades of ore could be mined.

v.  *be an outstanding example of a traditional human settlement,
    land-use, or sea-use which is representative of a culture (or
    cultures), or human interaction with the environment especially when
    it has become vulnerable under the impact of irreversible change;*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

vi. *be directly or tangibly associated with events or living
    traditions, with ideas, or with beliefs, with artistic and literary
    works of outstanding universal significance. (The Committee
    considers that this criterion should preferably be used in
    conjunction with other criteria);*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

vii. *contain superlative natural phenomena or areas of exceptional
     natural beauty and aesthetic importance;*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

viii. *be outstanding examples representing major stages of earth\'s
      history, including the record of life, significant on-going
      geological processes in the development of landforms, or
      significant geomorphic or physiographic features;*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

ix. *be outstanding examples representing significant on-going
    ecological and biological processes in the evolution and development
    of terrestrial, fresh water, coastal and marine ecosystems and
    communities of plants and animals;*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

x.  *contain the most important and significant natural habitats for
    in-situ conservation of biological diversity, including those
    containing threatened species of outstanding universal value from
    the point of view of science or conservation.*

> \_\_\_\_ This criterion applies to the property I am proposing
>
> Reason:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**3.b. Proposed statement of outstanding universal value**

Based on the criteria you have selected just above, provide a brief
**Proposed Statement of Outstanding Universal Value** summarizing and
making clear why you think the property merits inscription on the World
Heritage List. If adopted by the World Heritage Committee, the statement
"will be the key reference for the future effective protection and
management of the property."

Explanation: This statement should clearly explain the
**internationally** significant values embodied by the property, **not**
its **national** prominence.

"Outstanding Universal Value" is formally defined as "... cultural
and/or natural significance which is so exceptional as to transcend
national boundaries and to be of common importance for present and
future generations of all humanity. As such, the permanent protection of
this heritage is of the highest importance to the international
community as a whole."

**Cultural property**

For example, a cultural World Heritage Site may be a unique survival of
a particular building form or settlement or an exceptional example of a
designed town or the best work by a great internationally recognized
architect. It may be a particularly fine or early or rich survival and
it may bear witness to a vanished culture or way of life, or ecosystem.
Elements to consider for inclusion in the statement may be such cardinal
facts about the site as:

> *- Historic Context*
>
> *- Period of International Significance*
>
> *- Internationally Significant Dates*
>
> *- Internationally Significant Groups, Persons, Events*
>
> *- Cultural Affiliation*

The Shenadoah-Dives Mill is of world-wide importance because it shows
the importance of flotation technology in precious and base metals
mining. At the turn of the century, the easy deposits of ore had been
mined out world-wide. With new technological advancement such as
telephones and electricity, new markets for base metals developed.
Miners and mining operations sought base metal sources in the United
States and around the world. Thus, the mining industry turned to ores
formerly considered sub-marginal: complex ores, low grade, off-grade
materials, and waste products. The industry realized that materials they
once considered worthless, because it was too expensive to profitably
separate the metals from the waste, would be the only available deposits
for mining. The question was how to find a more efficient means of
concentration to process these products. And it had to be found quickly.
Simultaneously, the world market struggled with this problem and
historians note that this crisis and experimentation with flotation
facilitated significant developments in grinding and classifying methods
in mining and milling in the world's principal mining regions. Rapid
industrialization around the world demanded the use of copper, zinc,
iron and lead. Flotation technology made mining possible and profitable
throughout the first half of the 20^th^ century. Because it was in
operation until 1991, the Mill is completely intact. The mill could be
restarted again by flipping a switch.

Cultural landscapes

Such landscapes illustrate the evolution of human society and settlement
over time under the influence of the physical constraints and/or
opportunities presented by the natural environment and of successive
social, economic, and cultural forces, both external and internal**.**

Natural property

For example, a natural World Heritage Site may be a unique existence of
a type of habitat or ecosystem. It may comprise assemblages of
threatened endemic species, exceptional ecosystems, outstanding natural
landscapes or other natural phenomena.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Mixed property**

*A mixed property must be justified under at least one cultural
criterion (i-vi) under 3a above and one natural criterion (vii-x) under
3a above.*

***\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_***

**3.c. Comparison of proposed property to similar or related properties
(including state of preservation of similar properties)**

Please provide a statement explaining how the property being proposed
compares with all other similar or related properties anywhere in the
world, whether already on the World Heritage List or not.

There are no similar properties on the World Heritage List. There are
few mills left from the Mill's period of importance---the first half of
the 20^th^ century. There is only one mill similar to the
Shenandoah-Dives Mill in the United States---it is located at Pioche,
Nevada. It is a partial ruin. Most base metal mills of the first half of
the 20^th^ century were closed after World War II, and were scrapped
out.

There are many modern mills built in the past decade that use flotation
technology. Most modern gold and silver processing is done by a cyanide
leaching method.

*Explanation:* *Examples of questions that may be useful to consider
include whether the proposed property is part of a series or sequence of
similar sites belonging to the same cultural grouping and/or the same
period of history. Also, are there features that distinguish it from
other sites and suggest that it should be regarded as **more**,
**equally** or **jointly** worthy than they are? What is it that makes
this property intrinsically better than others and qualifies it for the
World Heritage List? For example, does it have more features, species or
habitats than a similar site? Is the property larger or better preserved
or more complete or less changed by later developments?*

*It will be especially helpful if specific reference can be made to a
study placing the property in a global context. The absence of
comparative information may indicate that the property is either truly
exceptional (a difficult case to prove) or that it lacks international
importance. If the results of the comparative review reveal that
multiple sites possess roughly comparable merit and may possess
international significance as a group, you may wish to recommend that
more than one site be proposed, as a serial nomination or as a joint
nomination by the United States and another country.*

*Also please make note of any major works that evaluate the property in
comparison to similar properties anywhere else in the world.*

**\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**3.d. Integrity and/or Authenticity**

*Explanation: As with a site's international significance, the clear
intent of this requirement is that a World Heritage Site's authenticity
or integrity must rise to a superlative level. Thus, for example, it is
quite important to understand that reconstructions of historic
structures or sites or largely restored ecosystems will usually be
disqualified from inscription in the World Heritage List.*

**Cultural property**

[Authenticity]{.underline}: Does the property retain its original
design, materials, workmanship and setting?

YES: \_\_\_\_\_X\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_The Shenandoah-Dives Mill was used as a mill until 1991.
Except for the addition of a public restroom in the office building, it
remains unchanged since it was constructed.

[Integrity]{.underline}: Do the authentic material and spatial evidence
inside the proposed boundaries remain in sufficient quantity to convey
the full significance of the site? To tell the full story of why the
site is outstanding? Is the integrity weakened by the intrusion of
discordant and/or abundant elements or buildings that are unrelated to
the significance and detract from the visual unity of the place?

YES: \_\_\_X\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_ The Shenandoah-Dives Mill complex is an excellent
representation of 1920s-era American milling technology in its original
processing format. Since its construction, only minor changes, in an
effort to increase production capacity, have been made to the mill
facility. The mill has integrity in seven qualities: location, design,
setting, materials, workmanship, feeling, and association.

The Shenandoah-Dives Mine and Mill are in the Animas Mining District of
the San Juan Triangle. The mine is on the south slope of Little Giant
Mountain in the section of the range referred to as King Solomon
Mountain; the mine's portal is 11,200 feet above sea level.

The mill (9,700 above sea level) is two miles northwest of the mine, at
the base of Arrastra Gulch near the Animas River. A 9,526-foot aerial
tramway connected the mill complex with the Mayflower portal of the
mine.2 The Shenandoah-Dives Mill, which is locally referred to as the
"Mayflower Mill" after the Mayflower portal of the mine, is two miles
northeast of Silverton on County road 2.

Note that that there can be authenticity without integrity, as in a
highly eroded archaeological ruin. There can also be authenticity with
full integrity of materials, but seriously undermined by the
overwhelming presence of newer or inappropriate elements.

How do authenticity and integrity compare for this property?

The Mill is completely authentic. Its integrity is compromised because
components such as the water tank, etc. are in disrepair.

[Repairs:]{.underline} If repairs have been made, were they carried out
using traditional materials and methods? If yes, please discuss. If not,
please explain the methods used and why.

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_X\_\_\_

Comment**:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Cultural landscapes:**

Authenticity: Does the property retain its distinctive character and
components?

YES: \_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_N/A\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Natural property**

Are there intrusions by non-native animals or plants and are there any
human activities that could compromise the property's condition?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_N/A\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

If efforts are being made to conserve or restore a site or ecosystem,
what is their nature and are scientifically directed measures being
used? If the site comprises a unique ecosystem or habitat values, is the
area proposed of sufficient size and configuration to contain as
complete a representation of an ecosystem or habitat as is practicable
or reasonable?

> Nature of conservation or restoration measures:

Proposed area is sufficient:

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Mixed property**

Does the property's authenticity or integrity rise to a superlative
level?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**4. STATE OF PRESERVATION AND FACTORS AFFECTING THE PROPERTY**

**4.a. Present state of preservation of the property**

**Cultural property**

What is the present state of preservation of the property (including its
physical condition and preservation measures in place)?

The Mill was in use from 1929 to 1991 and was kept in serviceable
repair. However, no major repairs were made and its age is showing. In
2005-06, a Historic Structure Assessment (HSA) was done which gives
plans, specs and costs for the repair of the Mill. It revealed serious
structural defects to the foundation, the crushing plant, the water
tank, the coal storage bin, and the tram house. Years of deferred
maintenance has left the office building in serious shape, with windows
falling out, failing stairs, and the like. Much of the water delivery
system is original and needs to be replaced or patched. In the spring,
melting snow sends water through the foundation of the mill, showing
serious drainage problems.

Are any recent or forthcoming planned major repair projects? Are there
any major repairs needed to buildings or structures that have not been
planned or financed?

In 2005, the Mill underwent HAER documentation. The HAER documentation
project provided the highest level of documentation available; it also
set the standard for documentation in the region and the state. The
drawing set and the historical research produced for the HAER
documentation was integrated into a Historic Structure Assessment which
has provided a comprehensive conservation plan for the preservation of
the Shenandoah-Dives Mill. The San Juan County Historical Society is
currently pursuing funding to implement this conservation plan. Funding
for the HAER documentation and the Historic Structure Assessment came
from the Getty Foundation, the Colorado State Historical Fund and the
National Park Service. Copies of these reports have been deposited in
the Library of Congress and the San Juan County Historical Society's
Archives.

## 

**Cultural landscapes:**

What is the present state of preservation of the property (including its
physical condition and preservation measures in place)?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Are there any recent or forthcoming planned major repair projects? Are
there any major repairs needed to buildings or structures that have not
been planned or financed?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

## 

## Natural property

What is the present state of conservation of the property (including its
physical condition and conservation measures in place)?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Are there data on species trends or the integrity of ecosystems and are
there any on-going or planned interventions to restore natural
conditions (e.g., to restore altered topography or manage invasive
species and/or restore native ones)?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Mixed property**

What is the present state of preservation of the property (including its
physical condition and preservation measures in place)?

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Are there any recent or forthcoming planned major repair projects? Are
there any major repairs needed to buildings or structures that have not
been planned or financed? Are there data on species trends or the
integrity of ecosystems and are there any on-going or planned
interventions to restore natural conditions (e.g., to restore altered
topography or manage invasive species and/or restore native ones)?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**4b. Factors affecting the property**

If there are known factors likely to affect or threaten the outstanding
universal values of the property or there any difficulties that may be
encountered in addressing such problems through measures taken, or
proposed to be taken, please use the following is a checklist to help in
identifying factors.

***(i) Development Pressures (e.g., encroachment, modification,
agriculture, mining)***

Are there development pressures affecting the property? Or major changes
in traditional land use? Or demographic shifts, especially in sites
still in the hands of the descendants of their creators, or, for
example, traditional ethnic communities.

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_X\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***(ii) Environmental pressures (e.g., pollution, climate change,
desertification)***

Are there major sources of environmental deterioration currently
affecting the property?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_X\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***(iii) Natural disasters and risk preparedness (earthquakes, floods,
fires, etc.)***

Are natural disasters likely to present a foreseeable threat to the
property? If so, are there available background data (e.g., for a
property in a seismic zone, give details of past seismic activity, or
the precise location of the property in relation to the seismic zone,
etc.)

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_X\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Are there contingency plans for dealing with disasters, whether by
physical protection measures or staff training?

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_X\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***(iv) Visitor/tourism pressures***

If the property is open to visitors, is there an established or
estimated \"carrying capacity\" of the property? Can it absorb or
mitigate the current or an increased number of visitors without
significant adverse effects?

YES: \_\_\_X\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

***(v) Other***

Are there any other risks or threats that could jeopardize the
property's Outstanding Universal Values?

YES: \_\_\_X\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_ The San Juan County Historical Society is a small
non-profit with a very limited volunteer base (Silverton has a
population of 500) and a limited income. Its volunteer board of
directors is aging and there are few people waiting to take over. At
some point it may not have the resources to manage and keep up the Mill.

**5. PROTECTION AND MANAGEMENT**

**5.a. Ownership**

Provide the name(s) and addresses of all owners:

San Juan County Historical Society, Inc.

PO Box 154

Silverton, CO. 81433

If any of these owners are corporations or other nongovernmental
entities, identify which are public and which private. Identify any
traditional or customary owners.

Public organization
owners:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Private organization owners: Private, non-profit organization

Traditional or customary
owners:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

If there are any other authorities with legal responsibility for
managing the property, provide their names and addresses:

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

For properties having multiple owners, is there any representative body
or agent which speaks for all owners? If so, does that representative
body or agent have authority to act on behalf of all the owners? If so,
provide the name and address of that representative body or agent:

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Are there any restrictions on public access to the property?

*Explanation: Public access is not required for inclusion in the World
Heritage List. Policies in effect should be explained, however. )*

YES: \_\_\_\_\_\_\_\_\_ NO: \_\_\_\_X\_\_\_

Comment: The property is open to the public on a seasonable
basis---summer only, or by appointment.

**5.b. Protective designations**

What are the principal existing (and pending) legal measures of
protection that apply to the property?

*Explanation: List, [but do not attach]{.underline} copies of, all
relevant known or proposed legal, regulatory, contractual, planning,
institutional and/or traditional measures that affect the status of the
property: e.g., national park, wildlife refuge, historic monument,
zoning, easements, covenants, deed restrictions, State and local
historic preservation ordinances and regulations, and the like.*

List of measures:

Give the title and date of legal instruments and briefly summarize their
main provisions. Provide the year of designation and the legislative
act(s) under which the status is provided.

Titles, dates, and brief summaries of legal instruments:

National Historic Landmark designation March 1, 2000

Title 16\>Chapter 1A\>Sub-chapter I.\>§. 461: National Historic Sites
act of 1935

Agreement and Covenant Not to Sue, April 26, 1996

Contract between the San Juan County Historical Society and the US
Environmental Protection Agency

Comprehensive Environmental Response, Compensation, and Liability Act of
1980, 42 U. S. C. §9601,[et seq.]{.underline}, as amended.

Are the protections in perpetuity or are there potential gaps in the
protection?

YES: \_\_\_\_X\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Are there any traditional ways in which custom safeguards the property?

YES: \_\_\_\_X\_\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:

In 1991, the gold mining era ended when the 125-year-old Sunnyside Mine,
the last, large mine in San Juan County, ceased operations. Low
base-metal prices and diminishing gold and silver reserves forced the
great mine to close. In its colorful lifetime over 900,000 ounces of
gold were produced, millions of ounces of silver and tons of base
metals. Sunnyside Gold Corporation, its operator, immediately
implemented the reclamation plan required by its mining permit which
required that the historic Mayflower Mill be torn down and the site
reclaimed. Because of its significance to San Juan County, the San Juan
County Historical Society approached Sunnyside and suggested the
Mayflower Mill be donated to us. The pride in its history by the
citizens of Silverton saved the Mill from being demolished.

**5.c. Means of implementing protective measures**

Will the owner(s) be responsible for ensuring that the nominated
property will be protected in perpetuity, whether by traditional and/or
statutory agencies? If no, identify who will be responsible.

YES: \_\_\_\_X\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Responsible entity other than the owner:

What is the adequacy of resources available for this purpose? Please
briefly explain your reasoning.

In event that the San Juan County Historical Society has to disband, our
assets (museum, railroad rolling stock, archive, powerhouse,
enginehouse, mill, etc.) revert to San Juan County government. Being a
government, they can levy taxes and direct monies to take care of these
assets, if they have the will and direction to do so from the public.

**5.d. Existing plans related to municipality and region in which the
proposed property is located (e.g., regional or local plan, conservation
plan, tourism development plan)**

*Explanation: List, [but do not attach]{.underline}, plans of which you
are aware that have been officially adopted or are currently under
development by governmental or other agencies that you believe directly
influence the way the property is developed, conserved, used or visited.
Include the dates and agencies responsible for their preparation and
describe their general nature, including whether they have the force of
law. It is recognized that this information may be difficult to compile
and that it may be difficult to decide what to include, but the
information will be very useful in determining how well the property is
protected.*

San Juan County is 86% public land. One third of its acreage is the
Wimenuche National Wilderness Area, managed by the US Forest Service.
The Mill is surrounded by public land managed by the US Bureau of Land
Management. Both entities have management plans. San Juan County has
zoning and land use regulations. Its regulations enforce protection of
historic properties in the county.

**5.e. Property management plan or other management system**

Is there a formal management plan or other management system for the
property? If yes, when was it last updated? If not, is one in
preparation and when will it be completed? (*It is not necessary to
provide copies, but a summary can be included if one is available.)*

YES: \_\_\_\_X\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_The Mill Tour is managed by the San Juan County Historical
Society in addition to its museum and archive operations in Silverton.

Is this management plan or other management system being effectively
implemented?

YES: \_\_\_\_X\_\_\_\_ NO: \_\_\_\_\_\_\_\_

Comment:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**6. MONITORING**

*Because monitoring the condition of a property is not essential to a
decision as to whether a property meets the basic qualifications for
nomination to the World Heritage List, no information about the
property's monitoring program is being requested at this time. If the
property is subsequently added to the U.S. Tentative List, a set of key
indicators for assessing the property's condition, the arrangements for
monitoring it, and information on the results of past monitoring
exercises will be required to complete the l nomination of the property
for inscription on the World Heritage List,.*

Because it is a National Historic Landmark, the property is monitored by
the National Park Service every other year. It is also monitored by
volunteers from the Watch Program run by the San Juan Mountains
Association*, a "friends"* group of the San Juan National Forest.

**7. DOCUMENTATION**

**7.a Photographs, slides, and other audiovisual material**

George Zanoni:

Ball mill

Modern image of the mill

All other photos are from the collection of the San Juan County Archive

If recent images (prints, slides and/or, where possible, electronically
formatted images, videos and aerial photographs) are available that give
a good general picture of the property, please provide a few photographs
and/or slides. If available, film/video, or electronic images may also
be provided. They should give a good general picture of the property and
illustrate the qualities/features that you believe justify the
nomination of the property to the World Heritage List. (Ten views or so
should be adequate for all but the most complicated properties.)

Please label the images you supply and provide a separate list of them
here, including the photographer's name. Please do not include any
copyrighted images or other images to which you do not possess the
rights or do not have permission.

Images being supplied and names of their authors:

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**8. CONTACT INFORMATION**

**8a. Preparer/Responsible Party for Contact:**

**Name: \_\_\_\_Beverly E. Rich\_\_\_\_\_\_\_\_\_\_**

**Title:
\_\_\_\_\_Chairman\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Address:\_\_\_\_PO Box
154\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**City, State/Territory, Zip Code: \_\_Silverton, CO.
81433\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Telephone:\_\_\_\_\_\_970-387-5488\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Cellular phone:
\_\_\_\_none\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Preferred Days/Hours for Contact: \_8:00 am-noon, 1:00pm-4:00pm,
M-F\_\_\_\_\_\_\_\_\_**

**Fax:
\_\_970-387-5144\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**E-mail and/or website:
\_\_\_bevrich@frontier.net\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**8.b. Responsible Official or Local Institution/Agency**

If different from the preparer above, provide the same information for
the agency, museum, institution, community or manager locally
responsible for the management of the property. In the case of public
property, identify both the responsible official and the agency. If the
normal reporting institution is a national agency, please also provide
that contact information.

**Name:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Title:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Address:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**City, State/Territory, Zip Code:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Telephone:\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Cellular phone:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**Fax:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**E-mail and/or website:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_**

**9. Signatures of All Owners of Private Properties or Authorizing
Officials for Public Properties:**

**Explanation: No property will be included in the U.S. World Heritage
Tentative List without the written concurrence of all its property
owners. This is because U.S. law expressly forbids nomination of such
sites. In addition, at the time of nomination, property owners must
pledge to the legal protection or the development of legal protection of
the property in perpetuity.**

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**Signature**

Beverly E. Rich

**Typed or Printed Name**

Chairman\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Title**

**March 30, 2007**

**Date**

(Please attach as many additional signature pages as may be necessary.)