Sacramento daily record-union. [volume] (Sacramento [Calif.]) 1875-1891, 1881-12-20

pueQ up on the Danh, pub thSic has DceH
sufficient put in there to apparently
raise the river bed, / jadge about
three fest. I should judge that is abeu.
the amountz all along by the Rice bridge.
I should think there was about three feet
that apparently comes from these deposits
from the banks The large pits that are ada
cent to it they have filed up there till You
lose all the traces of the last dump above IN
that deposit, which changes somewhat there
from the dumps above.
Q-What is the dep.h, mean width and
length. as you measured it?
A-Ths average mean width was 140 feet.
The Court-From Pickering's to Rrice's
bridge?
A.-Yes, sir. Theaveragedepth is i6 2feet,
or Is yards. and is Al 91S feet in length, and
contains 10, 113, 675 cubic yards.
Q.-How does the estimate that you made
and the estimate that Mr.. Uren made agree
with reference to the mean average width and
length.
A.-They agree as to the mean width, but
not as to the mean depth. He makes the
mean depth AZ feet, and make it 10 per cant.
greater, which is 46 3 The head of Picker
ing's Bar is about half mile below Canyon
creek. Pickering's Bar is composed of very
heavy, coarse material. bowlders and cob
bles-large powders and large cobbles.
Q-What did you base your calculation of
46.2 feet being the depth in the North Fork
of the American river above Rice's Bridge
to the head of Pickeripg's Bar rpon?
Al base it from my observations of the
stream as knew it in 1850. and also by tax
ing the high.water line and making an esti-
mate as to the depth and comparing il
with that now. The high-water line, a ma.
jority Of the way, is away below the top Of
the filings or deposit. see high-water
line, recent one, made there, but the original
high-water line is very deep along down
By Ford's Bar, and it shows itself. the FIRST
place that found it, near Stephens bridge,
and by com pairing the descent as went down
the stream judged somewhat of the amount
that was filed above made my estimates
as went along. and base them, as far as the
high water marks are concerned, by COM
paIison. There is, just above Rice's bridge,
on the south side of the river. very large
excavation; also right below Rics's bridge,
right close to it, On the same side and one
also on the opposite side, Immediately above.
Q.-Have you examined the Gold Run
mines with reference to the top wash and the
amount thereof?
Al have. AXE the average length to
be $4,000 feet, the average width 1000 feet
and the average depth rs feet, making total
of 72, 222, 222 cubic yards of excavations.
! That is the top wash, which is known as the
first stope that was taken off.
Q-Have you estimated the width, depth
and length of the pay ribbon of the channel
to be worked?
Al have. The length is 800 f4et.
which is two miles; the average width is 1884
yards; that is, | estimated that it was 20U
feet on the bottom and 600 feet on the top
The depth is 100 feet, or 40 yards, and the
contents are Is. 773, 333 cubic yards.
L., ii Al.
the North Fork of the American river and
capacity for tailings above Folsom?
Al think am. This answer is based
upon the proportion that this deposit will be
from the blue lead, such ss is left at God
Run. The capacity from there to Folsom,
tapering at point to Folsom, with no depth
at Folsom, and rising in the North Fork at
Canyon creek 900 fest high, which will not
bring il within 100 feet of the hight tf Bear
river, right opposite this point over the ridge,
the stowsge capacity is 3,45S. 400, 600 cubic
yards.
Q-State whether that storage capacity is
based upon the character of the material now
being worked, and that has been worked, in
the Gold Run mine for the last five years.
A.-Itis, as well as other localities worked
in similar material. For instance, in Bear
river, it would have more grade than the
North Fork would have. And this heavy
material does lay and stay there TO my certain
knowledge. This material from the Gold
Run mine is similar to that from the Dutch
Flat mines put into the Bsar river. The
mining material dumped into Bear river stays
there and withstands the foods It makes
dams end holds back everything tina. comes
down the river above it. Dams it up and
impounds it. That is what it does il Bear
river.
Q-Explain what you mean by say ing that
il makes dams?
A For instance, the Polar Star workings
at Dutch Flat have made a very extensive
excavation. They have dumped very large
quantity of this heavy material into the Bear
riger. It has made dam there that is 100
feet high, ard more, too, and it stands there
during tie floods. 1t stands there and does
not wash cut. A very large pond is made in
the river above, which corrals everything
that comes down the river from tie mines
above.
Speaking of the Polar Star dam, what
is the inciiaation Of it?
Al should say on the lower side it de-
scended On an angle of from ten to twenty
degrees.
Q-Now state the character of the material
in the Gold Run mine remaining to be worked
out?
A.-The character of the material is mass
OF rock, powders and finer gravel, with the
rocks packed about as closely as they will lay
together-the intersticss filed up with fine
gravel and sand. The whole mass is cementei
together and when l speak of cement
mean this mass Of csbbles and rock existing
in that bank of cement not as body of c.
ment. I have heard it spoken of as SO much
cement. [ mean tina. this mass is cemeEted
together-:hat there is 10 such body as ce-
ment itself, pure cement. The cobbles are a
sort of elipsoid in shape. They are longer
than they are wide, and they are wider than
they are thick. An oval shape represents a
fair sample of the bottom powders and rocks
of that deposit. They are packed pretty
nearly as close together as they will lay, and
the interstices are filled with smaller gravel
and sand. That is about the character of the
deposit. It is in color pretty nearly slate, al
though commonly called the blue lead. The
color of it resembles the original wash in the
North Fork of the American river. The rock
material is principally slate. In the bottom
strata slate predominates, while in the top
strata quartz predomiDates. The bottom ma
terial is the color of the original wash ap.
parently, which is about the same color as
the original bed of the American river in
places that have mined on and the char
acter of .i.e material when dumped into the
American river is the same. The sizs of the
rocks on This blue lead vary from rocks that
weigh ton down to cobbles, and from that
down to gravel an inch in diameter.
Q-in what proportion is il rock, cobbles,
bowiders, stones and sand?
Al estimate that the rock material, from
pebbles the sizs Of an inch in diameter up to
the largest towlders that exist there, make
about 75 or so per cent. of the entire mass Of
material. I should set it at SO per cent.
The balance is finer gravel than this, Of aninch
in diameter, tapering down and finally ending
in saad l judge Of the gravel about 10 per
cent, and the sand about 10 per cent. Of the
fine material.
@ Calling Pickering's Bar the dump, for
what distance can the material you have de.
scribed go below to Rice's bridge or the Iowa
Hill dump?
Objected to.
@ Where is the dump-or where does the
dump commence?
Al commences at Pickering's Bar and
extends down the river from that. The last
traces of the Gold Run dump are lost when
you come TO the first dump from Iowa Hill
Q.-Where is the Iowa Hill dump?
| At is about three miles, / should think
below Pickerine's BlI-.hree or four miles.
| Q-What per cent. of the material yor
have described coming from the Gold Rur
mines can pass the Iowa Hill dump?
| Al do not think any could pass-unlesl
it is some sand. There may be one or TIVE
per cent. OF it that would pass
| Q-How long has that been the case in re
| gard to the mining at Gold Runs
| A.-Since they commenced to work thi