Page 761 - calmining1890

TRINITY COUNTY. 709

eater portion caught in bedrock drain; no undercurrent used; tailings
in through sluices into the river.

JORDON & BIGELOW CLAIM.

Cox Bar District, T. 33 N., R. 12 W.; working river bar and bench;
pth of gravel, thirty to seventy feet; elevation, one thousand three
undred and twenty feet; deposit, fine gravel and sand; formation,
ark clay slate; horizontal; no cement; some pipe-clay; value of gold,
17 62-J per ounce; two monitors; season, seven months; water from
niches in mountain.
TOM PRICE'S DRIFT MINE.

In Cox Bar District, four acres; depth of deposit, soil and sand, twenty-
ve feet; gravel on bedrock, four feet; elevation at bedrock, one thousand
hree hundred feet; tunnel from river level, two hundred and fifty feet
3ng; drifts from main tunnel, two hundred feet on each side; gravel,
ne; value of gold per ounce, $17 50; bedrock, slate; gravel, sluiced in
:. >oxes; water season, eight months.

THE TRINITY RIVER TUNNEL AND MINING COMPANY.

T. 5 N., R. 7 and 8 E., H. M., on Trinity River, twenty miles west of
forth Fork by trail, there being no wagon road through this section of
he county. The company has about one hundred and forty-five acres
if auriferous gravel on Taylor's Flat, Sec. 25, T. 5 N., R. 7 E. Average
lepth of gravel, thirty-five feet; water for hydraulics conveyed by ditch
md flume from French Creek, heading in New River Mountains; length
)f ditch and flume, five miles, about two thirds of the distance being
lumed five feet wide and four feet deep. Some years ago about two
icres of this flat was worked by Fowler & Finsley, yielding about $40,000;
haracter of gold, scale, coated; coarse and fine. Estimates are made by
he Superintendent that the water will be on the ground this season.
The company also control about two and one half miles of river bed above
Taylor's Flat, T. 5 N., R. 8 E., for purposes of river mining, having con-
structed a tunnel to the point of mountain around which the river makes
sharp bend for about one mile. Length of tunnel, four hundred and
ninety feet; size, sixteen by six feet; outlet, nine feet above river level.
A dam has been constructed at the inlet of tunnel across the river bed;
length, three hundred feet; height, fourteen feet; built of timbers twelve
inches square, to divert the waters from the river through the tunnel
during the summer and fall seasons, the capacity of the tunnel not being
sufficient to carry a large volume of water during the winter or rainy
season. Tailings from the hydraulic mines above have accumulated in
the river beds to a depth of about fifteen feet. It is estimated from tests
and prospects that about three feet of this, resting on bedrock, will pay,
this section of the river not having been worked in the days of river
mining. The formation penetrated in tunnel is mainly slate, of the
same general character as that of the river bed.

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