MINEBK00495

• County: Clear Creek
• Document: Manager
• Suffix: A

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THE MAXWPsLL CONCENTRATING MILL
Silver Plmme, Colo, December 19, 1899.
Located about one half mile west of the Town of Silver Plume in
Clear Creek, Canon, at as altitude of nine thousand two hundred (9,200)
Yaet.p~'A. Haswell, owner.
The mill is built oa the Mendota ground. Mr. Maxwell has s lease on
the dump and the old atppae of the Mendota Mine, and the mill is built for
the purpose of treating this class oY ores. Auaoan Drummond ie Superintendent,
Duetoat, Blo. This mill is a ooneentrating prooess making three dietinat
separations of lead, iron end zinc. The motor power is eleotriaity; the first
of the kind in Clear Creek County, and the separating process is perhaps the
first of the kind in the State. The power ie transmitted from Georgetown, two
miles distant, with two thousand volts, transformed at the mill to fifty-five
volts. From the IInited Light & Power Company. The mill is in three sections,
can run ore on three aeotione at a time, or I should say ell together.
The mill house is 40 x 60 feet, two stories high.
The ore ie first fad into dodge orueher of 76tons oapaoity in 24 hours.
From the crusher down the mill ie automatio. The ore rune from orueher to
one set oY high speed rolls, thence by elevator to one sizing screen of wire
oloth of 8 x 14 mesh; Prom screen to three hydraulio sizers, and Yrom the
eizars to the different Hertz ~ige, of whioh there are Yive; four of whioh
are Your oompartment, and one three oompartment. All materials too enures
to peas through the mesh of the screen returns by gravity to a set of re-
grinding rolls and then goes through the prooess above mentioned and des-
cribed. There is one MoCoy table but sot in use. The first oompartment
of all the ,jigs oatohae the lead, the second oompartment the iron, the third
oompartment iron and zino whioh is put book by hand to the first oompartment;
the Youri;h oompartment oatohae the zino s11 olear of iron and lead. The
fourth compartment of one dig oatohae the slimes Yrom all the ,jigs.
Three man on a shift rue the mill, a dig man and s helper and s Yse{ler`~
oY the orueher.
The feeder gets $)2.60 per day 10 hours
The helper gets 02.60 par day 10 hours.
Thorn are three motors, two oY tan horsepower aaoh end one of tvranty
horsepower. All three transformers for Eransfor~ning the voltage. Thin
mill has only bean running five days, oonaequently 1t hoe not been deter-
minofl what saving is made. Oapaoity (76) tone in 2h hours.
Reepeatfully submitted,
P. H. C11fAord
Inepaator.

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