Custer weekly chronicle. [volume] (Custer City, S.D.) 1890-1931, 1893-03-04
Mining Items.
THE KEYSTONE MILL.

The Keystone mill is running with
wonderful results. The ore being soft
is easily stamped and is being put
through at a great rate the ten stamps
In use crushing sixty ton per day. From
partial cleanups it is believed that four
dollars per ton at low estimate will be
saved on the plates, while the concen-
traitors collect ton Of iron pyrite from
about twelve tons of ore; this concen-
trate yields about 800 per ton. The
present gross income therefore running
ten stamps is in the neighborhood of
$50 per day, with sufficient ore in sight
for an indefinite number Of years. The
water supply will be abundant End
never falling when the drift to the creek
bed is completed, and the remaining
ten stamps will begin dropping and the
output be doubled. A contract has been
let to Charles Long, of Hill City. to
deliver at least six tons Of concentrates
per day at the Keystone switch on the
Addie railroad branch. Shipment will
begin Immediately and continue until
the company conclude TO build smstsr.
The force Of miners has been largely
increased during the past week and
everything about the place wears an air
Of active business The directors Of the
company who have been on the ground
since the starting Of the mill are ex-
tremely pleased with results so far; me
best evidence Of which is seen in the
negotiations for other properties Two
months steady work will put new face
on the business of gold mining in the
Southern Hills.-Tin Miner.
THE FIRST CLEAN UP.
Jacob Lampert, one of the owners of
the j. r. mine, near he town of Sheri-
dan, came down from Hill CITY yestsr-
day, and last evening when asked by a
reporter if there was anything new up
in his country, said that there was and
asked the reporter If he had heard Of
the cleanup Of the Keystone on Tues
day. Mr.. Lampert stated that the mill
had been crushing sixty tons of ore per
day with the ten stamps IN operation,
and as soon as a supply Of water could
be obtained the twenty stamps would
be dropped. The owners Of the Key
stone only expected the ore to yield
about fourteen dollars to the ton, but
when the cleanup was made it was
fouzd to greatly exceed that amount
The ore from the mine yields according
to the assays four dollars to the ton
Of free milling, and ten dallars a ton
in concentrates, and the owners Of the
mine had no idea Of securing anything
in excess of that amount. Mr.. Lampert
said that he could not say exactly what
the ore yielded, but that all connected
with the company were jubilant and
said that the yield was largely in ex-
'oe-r or sours~en uofIars vou----rrTe-
Keystone mine is conceded by all min
ing men who haye examined il 10 be
one of the best pieces of property in
the Black Hills. and while not being all
OF free milling ore the property can be
worked cheaply and at handsome
profit. The mine carries ore that con-
centrates one ton in ten, and with the
ten stamps in operation six tons Of con
centrates which yields considerable over
one hundred dollars to the ton are
saved. and four dollars per ton of free
gold saved on the plates. makes the
property at once take prominent posi- |
ton as bullion producer for the year
1898. The St. Paul gentlemen together |
with Major A. j. Simmons, the superin-
tendent Of the company, wko urged |
them to make the investment, are 10 be |
in the opening Of this val |
nable property that will before the close |
Of the year pay them many dollars on |
[ heir inypStmpn -IOurnal