# Presentation: 488250

## Kevin T. Lesko
for the Homestake Collaboration
27 October 2005

*for the Homestake Collaboration*
*27 October 2005*

- The Homestake Underground Laboratory - Open for Science!

## NSF: 1 of 2 Finalist for NSF’s DUSEL, with Henderson Mine in Colorado - both sites developing Conceptual Design Reports
Progress at Homestake: Significant Progress on a number of important issues, including Title, Indemnification, Rehabilitation and Opening of the Site for Science
Science Opportunities at Homestake in 2007: The State of South Dakota, working with the science, engineering and education communities has established an “early access” option for Homestake. This is now funded from State control resources.

- Progress at Homestake: Significant Progress on a number of important issues, including Title, Indemnification, Rehabilitation and Opening of the Site for Science
- Science Opportunities at Homestake in 2007: The State of South Dakota, working with the science, engineering and education communities has established an “early access” option for Homestake. This is now funded from State control resources.

- Homestake Laboratory Status and Plans

## Title to the Property, Permitting, Legal Issues
Depth and Range of Depths
Access to the Underground, wide variety of depths
Dedicated access - no competition with mining
Safety and Management
Defining the Science and Engineering Programs, Initial Suite of Experiments and Timelines for Development
Supporting the Science, Engineering and Education Programs

- Depth and Range of Depths
- Access to the Underground, wide variety of depths
- Dedicated access - no competition with mining
- Safety and Management
- Defining the Science and Engineering Programs, Initial Suite of Experiments and Timelines for Development
- Supporting the Science, Engineering and Education Programs

- Major Issues for DUSEL to be addressed in the CDRs

- developing as part of DUSEL CDR

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## Barrick and South Dakota agreed to transfer the property in January 2004, in Feb. 2005 agreement this was expanded to include the 4850 “early lab” option 
SDSTA, Barrick and the State Government (Governor’s office) have amend the “Agreement in Principle” to suit the 4850 lab and are in the final stages the transfer 
Governor’s Office is enthusiastic & has secured additional State funding, $20M, to complete the “Agreement”, total of $45M 
Title Transfer should be secured by December 2005

- Barrick and South Dakota agreed to transfer the property in January 2004, in Feb. 2005 agreement this was expanded to include the 4850 “early lab” option
- SDSTA, Barrick and the State Government (Governor’s office) have amend the “Agreement in Principle” to suit the 4850 lab and are in the final stages the transfer
- Governor’s Office is enthusiastic & has secured additional State funding, $20M, to complete the “Agreement”, total of $45M
- Title Transfer should be secured by December 2005

- Title to the Property

## Water discharge permits have been obtained as an extension of the current permits from by Barrick and transfered to SDSTA
Mine closure plan vetted by EPA several years ago, including site inspections and documented closure plan and inspections
Rock Disposal sites identified for small quantities, both under - and above - ground and within property boundaries
Discussions with Barrick about use of the Open-Cut for large quantities

- Mine closure plan vetted by EPA several years ago, including site inspections and documented closure plan and inspections
- Rock Disposal sites identified for small quantities, both under - and above - ground and within property boundaries
- Discussions with Barrick about use of the Open-Cut for large quantities

- Permitting & EPA

## The Homestake Facility

## Overview of Homestake Proposal

- Progress in Developing Homestake
- Title
- Reentry
- 4850 lab
- Design of the Deep Lab
- Science Opportunities at Homestake
- 4850 Lab || Deep Lab
- Astrophysics and Physics
- Earth Sciences and Geosciences
- Biology
- Engineering
- Outreach and Education

*SDSTA = South Dakota Science and Technology Authority*

## Homestake Proposal - Major Distinguishing Features

- Parallel Efforts to Develop Homestake into an Underground Scientific Facility
- State of South Dakota Funded Efforts Independent of NSF S-1, S-2, S-3 Processes
- Conversion Plan to Preserve the Site
- 4850-laboratory to open in advance of DUSEL
- Basic Operation of the 4850 laboratory until 2012
- S-1, S-2 Efforts to Define Science Uses and Promote Use of the Facility in the Near Term
- Develop Plans for Deep Facility built on 4850-lab, S-2 S-3
- Safety Integrated into Facility and Operation
- E&O Roles and Opportunities Prominent from the Start

## To preserve Homestake for DUSEL, must address: water, title, & access
“Implementation Plan” Funded by South Dakota
rehabilitate the site and establish the 4850 Lab
basic operations of the site until 2012
plans for 4850 lab to be tailored for the science programs
Plan was established and vetted in 2004:
obtains title and access to the facility
deal with the water (upper water immediately ~ 2/3 of the 700 g/min), ensure lower water is halted below 5300
refurbish lifts and shafts (Ross and Yates)
investigated options for staging access
establish an interim facility at 4850 and above start science early!
establish a plan and path to evolve into a national facility

- “Implementation Plan” Funded by South Dakota
- rehabilitate the site and establish the 4850 Lab
- basic operations of the site until 2012
- plans for 4850 lab to be tailored for the science programs
- Plan was established and vetted in 2004:
- obtains title and access to the facility
- deal with the water (upper water immediately ~ 2/3 of the 700 g/min), ensure lower water is halted below 5300
- refurbish lifts and shafts (Ross and Yates)
- investigated options for staging access
- establish an interim facility at 4850 and above start science early!
- establish a plan and path to evolve into a national facility

- Early Implementation Program

## Not uncommon to have water of this magnitude in a mine, 2/3 comes from the surface
Cycles of Flooding and Dewatering are not uncommon
Water quality not likely to significantly degrade the infrastructure (pH neutral water)
Important to preserve the 4850 level
Implementation Program deals with these issues
6800 level was crossed Nov 2004 ~ month behind expectations
6500 has not yet been crossed (Oct 2005)

- Cycles of Flooding and Dewatering are not uncommon
- Water quality not likely to significantly degrade the infrastructure (pH neutral water)
- Important to preserve the 4850 level
- Implementation Program deals with these issues
- 6800 level was crossed Nov 2004 ~ month behind expectations
- 6500 has not yet been crossed (Oct 2005)

- Water

## Pumps shut off in ~ May 2003
6800 level was crossed Nov 2004 ~ month behind expectations
6500 has not yet been crossed (Oct 2005)
Expected to cross 4850 late 2007-early 2008, if nothing is done

- 6800 level was crossed Nov 2004 ~ month behind expectations
- 6500 has not yet been crossed (Oct 2005)
- Expected to cross 4850 late 2007-early 2008, if nothing is done

- Water

## Access to 4850 level and above by 2007 as defined in the Early Implementation Program
Access to 8000 level and deeper as part of DUSEL effort within NSF ~ 2008 or 2009

- Access to 8000 level and deeper as part of DUSEL effort within NSF ~ 2008 or 2009

- Depth

## Expedient access to ~20 cubic kilometers of rock mass, depths to 4850 feet, many existing spaces and excavations suited for science in the near term

## 2900 feet

## Using Existing Conveyances that will be inspected and restored as part of the Early Implementation Program

- Access

**Yates Ore Hoist**
**     ****By Nordberg Mfg. Co.**
**    ****Two 1,500 hp DC Motors**
**    ****Skip Payload = 20,000 lb.           **

**Surface to 4850 - Ross and Yates Shafts**
- 	Each cage
- 	54” wide 12 foot deep 6 - 7 Ton payload
- 	larger dimension loads can be slung below cage
- 	Skips have 10 Ton capacity, each
**4850 to depth - #6 Winze, #4 Winze**
- 	similar capacities and dimensions

## Yates Shaft Plan

- Approx. 27’-8” x 15’

- South Cage

- North Skip

- North Cage

- South Skip

- 12” Airline @ 90-100 psi

- Fiber Optic Cable
- 24 pr, 62.5 micron, Tbase 10

- Each Cage Compartment
- 5’-3-1/2” (F-F) x 13’-4”

- Ea. Skip Comp.
- 4’-10” (F-F) x 5’ 9”

## Foremost Concern for DUSEL
Excellent Safety Record at Homestake
Dedicated effort to integrate safety from the start both for the operations and science sides

- Excellent Safety Record at Homestake
- Dedicated effort to integrate safety from the start both for the operations and science sides

- Safety

## Who Can Use it?

- Near Term:
- 	Surface to 4850 hydrology, geology, geochemistry
- 	Rock deformation studies using drifts and shafts
- 	Studies of the cratonic crust through 20 km3
- 	Searches for life and exotic biology including initial microbial investigations
- 	Investigations of flow path delineation in heterogeneous geological settings & ground water studies/models
- 	Characterizations of facture mapping, stress measurements and ground water chemistry
- 	Thermal-mechanical-hydrological couplings across many orders of magnitude in scale
- Longer Term:
- 	Systematic searches for and characterizations of life
- 	Long term and large scale characterizations and expts.
- 	Carbon Sequestration

- Earth Science, Biology and Engineering

## Who Can Use it?

- Near Term:
- 	Cosmic Rays Studies
- 	Low Level Counting
- 	Prototyping, Materials Production for
- 		Double Beta Decay
- 		Dark Matter
- 	Next Generation Dark Matter
- 	Next Generation Double Beta Decay
- 	Nuclear Astrophysics
- 	Begin work on Proton Decay & Long Baseline
- Longer Term:
- 	Continued operation of DM, DBD
- 	Solar Neutrinos
- 	CP violation Long Baseline
- 	PDK
- 	Supernovae monitors

- Physics Uses

## 
• October 17, 2005 Funds for the 4850 level laboratory access are secured 
• November 2005 Request for Letters of Interest
• Earth Science Workshops at the AGU on 4 & 9 December 2005
• December 2005 Transfer of the Homestake site from Barrick to SDSTA completed 
• 10 December initial responses to LOIs requested
• January/February 2006 2nd round of workshops defining engineering plans for Physics, Earth Science, E & O - followed by Presentation and 1st Review of Proposals
• 27 January 2006, LOI Responses Requested
• Spring 2006 Begin work on site rehabilitation and the 4850 level laboratory access & Development of Proposals and Program for Homestake 4850 lab (Homestake working with Proponents)
• 2nd half 2006 4850 level ready for construction of new chambers, occupancy existing chambers 
• Early 2007 Complete modifications existing space and experiments begin

- • October 17, 2005 Funds for the 4850 level laboratory access are secured
- • November 2005 Request for Letters of Interest
- • Earth Science Workshops at the AGU on 4 & 9 December 2005
- • December 2005 Transfer of the Homestake site from Barrick to SDSTA completed
- • 10 December initial responses to LOIs requested
- • January/February 2006 2nd round of workshops defining engineering plans for Physics, Earth Science, E & O - followed by _Presentation and 1st Review of Proposals_
- • 27 January 2006, LOI Responses Requested
- • Spring 2006 Begin work on site rehabilitation and the 4850 level laboratory access & Development of Proposals and Program for Homestake 4850 lab (Homestake working with Proponents)
- • 2nd half 2006 4850 level ready for construction of new chambers, occupancy existing chambers
- • Early 2007 Complete modifications existing space and experiments begin

- Timeline for Homestake

## Active participation by all users is strongly encouraged
Call for Letters of Interest ~ 1 November 2005 
Develop Homestake & DUSEL plans - Establish Initial Suite of Experiments and Users - start the dialog of what is needed and how to make this work for us all
SDSTA intends to make Homestake competitive with existing alternatives and to provide the first step in establishing a domestic underground facility
neutrino.lbl.gov/Homestake/LOI
neutrino.lbl.gov/Homestake
www.dusel.org
homestake.sdsmt.edu/Resources.htm
ktlesko@lbl.gov

- Call for Letters of Interest ~ 1 November 2005
- Develop Homestake & DUSEL plans - Establish Initial Suite of Experiments and Users - start the dialog of what is needed and how to make this work for us all
- SDSTA intends to make Homestake competitive with existing alternatives and to provide the first step in establishing a domestic underground facility
- neutrino.lbl.gov/Homestake/LOI
- neutrino.lbl.gov/Homestake
- www.dusel.org
- homestake.sdsmt.edu/Resources.htm
- ktlesko@lbl.gov

- More details to become available soon