Page 210 - calmining1890

204 REPORT OF THE STATE MINERALOGIST.

silver-plated copper plate. They are given an inclination of one and
three quarters inches per foot. The mill is supplied with four Chal-
lenge feeders. About 60 per cent of the gold recovered was saved in
the battery, and 40 per cent on the outside plates. Eight Frue concen-
trators are in the mill. The sulphurets averaged $150 per ton in gold,
and twenty ounces of silver per ton.
The plant has a roasting furnace of three tons capacity. The mine
has employed thirty-five men, and seven men in the mill, with two out-
side. Wages averaged $3 per day in the mine, and $4 per day in the
mill; outside labor being paid $2 50 per day. A Hamilton Corliss
engine, ten by thirty-inch cylinder, with a horizontal tubular boiler,
fifty-two inches in diameter by sixteen feet in length, supplied the mill
with power. Hoisting was done by means of a double vertical hoist,
nine by ten-inch cylinder, steam supplied to it by a horizontal tubular
boiler forty inches in diameter by fourteen feet long. Seven cords of
wood was the daily consumption, the cost being $4 75 per cord.
In this district are also the mines D'Or de Quartz Mountain, Texas
Flat Mine, Flying Dutchman Mine, Crystal Spring Mines, Sullivan
Mine, Rattlesnake Mine, Kings Gulch Mine, Victoria Mine, and several
others, all of which have been worked to some extent, and some are now
being prospected, while others, from various causes, are not now being
worked.