Sacramento daily record-union. [volume] (Sacramento [Calif.]) 1875-1891, 1881-12-06

three hours. My specially is metallurgy. |
spent one year in analyzipg slags and ores. l
was asssying, refining and surveying at dif-
ferent times while in Nevada. Ia general
the rocks found in the pit at the Gold Run
mine belong to the sedimentsry class.
There are more than one kind of quartz.
Quartz pebbles. silicpus slate pebbles, apgu-
lar or sub-angular serpentine rocks, pebbles
containing large amounts of silica that,
think, quartzoas, and other rocky foma-
tiops. were found ia the pit. [ found mica
IN the pipe-clay in considerable quantities.
From Canyon creek for a long distance down
the river, | found no mica. I went from
Sacramento to San Francisco by steamer in
1860, and saw no bars in the river. do not
know the location of Texas Hill.
GENERAL C. B. COSBY SWORN.
For the past three years have resided in
Sacramento, and been engaged in the ca
paelty OF Secretary to State Engineer Hall.
On the Sd of November, 1881, I received in
structlons to go to Indiana Hill, at Gold
Kun, and assist Mr.. Grunsky in some sur
veys he was engaged upon. Mr. Grunsky
was ordered to make . careful Instrumental
survey of the pit. l found the mine
to consist of large and deep pit, in
which were two or three giants and other
hydraulic apparatus. 1 found some rock
that was very hard and others that would
easily crumble. The material of the mine
was washed through tunnel into Canyon
creek. With the exception OF one place
where the bank had caved, the bottom OF the
pit was comparatively clear. The canyon at
the mouth of the tunuel was deep and pre-
cipitous. The dump was about twenty feet
above the mouth of the canyon. An obser-
vation was taken at the mouth Of the tunnel,
and again at the mouth of the canyon, and
the difference in altitude found TO be 1,020
feet. The dump of the mine into the canyon
is less than mile from the point where the
canyon empties into the North Fork. There
was some water of q dirty greenish color run
ming through the tunnel at the time visited
the mine. For several miles from the mouth
of Canyon creek the river is of uniform
grade. The estimated amount of debris in
the first section was 1,042, 1862 cubic yards
from Iowa Hill to Stephens bridge, /. S42,-
432 cubic yards; from Stephens bridge to
Rice's bridge, 545, 600 cubic yards; from
Rlce's bridge to Rocky canyon there is no de-
post; from Rocky canyon to Shirt
tail canyon, 1,140,740 cubic yards;
yon No. 2, 5,572, ,S25 cubic yards.
Through this second Rocky Canyon I esti-
mated to be nothing. From Rocky Canyon
No. to the mouth of the Middle Fork
80, 600 cubic yards. [ estimated the total
deposit at 10. 209, ,067. Mr.. Grunsky and N.Y.
self travelled this distance on foot The de-
posit was mostly a
CLEAN-wAsHED CoBBLE
And gravel. The proportion of sand and
sediment in these deposits was very small.
Water-worn rocks in this reach plainly indi-
Gated to what hight the flood waters reached.
In some places, notably in the canyons, these
water-worn rocks were thirty five feet above
the waters surface. We tried to follow the
river by its channel, from the junction of the
Middle Fork, but found we could not do so.
In some places we measured distances with
tape line. / don't remember the
point at which 1 first observed slick
ems. I saw immense quantities of slick
ems between Folsom and Sacramento.
The sand and sedimentary deposits at Fol-
som are heavier and coarser than those near
Sacramento city. About midway between
Folsom and Sacramento there are bars of cob
bles, sand and slickens. The river meanders
through these deposits and appears to be con-
stantly changing its channel. Where we
forded the river at Sacramento Bar, the
water was about one foot deep-and water
quite muddy. We lunched at Sacramento
Bar, and drank some Of the river water. The
water at that point would compare fayorably
with our Sacramento water.
The direct examination of General Cosby
was concluded, and Court adjourned till $50
A. NJ to-day