Garnet: Its Mining, Milling, and Utilization Page: 17
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DESCRIPTIONS OF MINES AND, MILS
and removed by hand. The middling produced is sent to a Wilfley
table which makes a clean tailing, which is sent to waste, and an
enriched middling. This middling goes by an elevator to a steam
drier; after drying it is screened through 40, 52, and 68 mesh screens.
The minus 68-mesh material goes directly to waste. The other prod-
ucts are concentrated on pneumatic jigs which produce a con-
centrate, middling, and tailing. The middling is returned to the
pneumatic jigs.
An elevator takes the middling from the four James jigs and the
single Hooper vanning jig to a single-cell James jig which makes a
clean concentrate and a middling which goes to a set of Hummer
screens. These screens size the material to 3 , 5, and 10, mesh. The
middling product from the vanning jigs having a 12-mesh screen also
goes to these screens. Rolls crush the oversize from the 31/2-mesh
screen and also the skimmings from the Harz jigs which have
passed a 2-mesh screen. These rolls are in closed circuit with the
Hummer screen. The plus 5 mesh goes to a James jig having a 6-
mesh screen, which makes a concentrate and middling. The plus 10
mesh goes to a two-cell James jig, provided with 12-mesh screens,
which makes a concentrate, middling, and tailing. The middling
from the 6-mesh and 12-mesh jigs is recrushed in the rolls and sent
to the Hummer screen. The minus 16 mesh goes to the 16-mesh
vanner jig where it joins the circuit of the 22 and 30 mesh jigs.
An elevator carries all the concentrates to an inclined steam drier
which discharges into a bin that receives the mixture of all the
different concentrate products. This final concentrate averages 90
per cent garnet. It is sacked and then trucked to North Creek for
shipment by rail. Three 150-horsepower coal-fired Stirling boilers
supply steam to a tandem Corliss-valve engine which drives the
mill.
Part of the tailings are utilized for road construction. They
also make an excellent concrete aggregate but are not valuable
enough for this purpose to warrant transportation beyond the
immediate locality.
THE BARTON MINES CORPORATION
The mining and milling operations of the Barton Mines Corpora-
tion are situated on Gore Mountain at an altitude of 2,800 feet,
about 41 miles southwest of the village of North Creek, N. Y. By
road the distance is approximately 11 miles and in places the grade
is high, as there is a rise of 1,800 feet in approximately 3 miles.
Trucks bring in supplies for the camp ana carry the garnet concen-
trates to the railroad.17
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Myers, W. M. & Anderson, C. O. Garnet: Its Mining, Milling, and Utilization, report, 1925; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc12435/m1/23/: accessed May 6, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.