The White Pine news. [volume] (Treasure City, Nev.) 1868-1906, 1906-12-25

With small, rich veins this might be an
objection to the use of drills, but in
ore bodies like those found in Ely, I
believe as good sample could only be
taken with great care. Most of the
sludge or drillings will pass 2o-mesh
screen, and good method Is to provide
large box with a capacity equal to
a screw is three feet in length and
when fed out, the clamps are changed
on the rope, and the hole baled or sand
pumped. By settling and decanting the
water, the entire product of the hole
may be saved and sampled. / nordinary
practice it is sufficient to dip sample
from the box and pour the same into
box partitioned off in compartments
about the size of common brick. This
enough to sample by chipping, and can
be shipped and carried about without
breaking.
In hole carried down without cas-
| ing, there is danger of knocking down
PARTICLES from the upper portions of the
| hole This can vitiate the sample, but
the harm done is more theoretical than
actual. As is well known, the ore
bodies of Ely are the impregnation of
| ore body of much value must be a
hundred or more feet thick. While
actually in ore, the sampling may be
done with extreme care, but often the
hole, all or in part, may be in barren
country rock, and only knowledge Of
the formation penetrated is desired. The
best sample, where not in ore, is OBJ
tanned by panning the sample. This
concentrates the coarse particles, which
are clearer to the eve and very cempre-
hensive where a magnifying glass of
low power is used. Ep oxidized forma-
tons some doubt often arises to know
If the drillings are composed of por-
phyry or limestone. A small bottle of
diluted hydrochloric acid will soon set
tie this question with entire satisfac-
tion.
We have made a practice of saving
a sample of each formation penetrated,
and bottling the same in four-ounce bot
ties. This gives clear and perfect
picture of the hole, and is valuable for
future reference
Our drills are provided with traction
| gears, and may be moved at will over
| the toughest ground. This saves the ex-
pense and trouble of procuring teams.
The winter weather is severe for out
side work, and sectional houses, so made
as to be readily knocked down and
moved, have been constructed to enclose
the drills, and within these houses the
men work in comfort.
The cost Of No. 8 drill is as follows;
Drill fob. Beaver Falls ............. 81 400
Cost lost. of casing for 400 feet and
hshlng tools Observation-Disclosures. $50
Freight to Cherry Creek ........... 1928
| Hauling sixty miles from Cherry
Creek - Observation-Disclosures. 225
| Cost of No 3 drill, good for 500
feet, laid down ON the ground $1,000
This size drill is light for holes of
greater depth than 500 feet The size
recommended is a No 5, good for 1900
feet, and the cost of the same with
traction gear is about $4,000 laid down
at Ely.
Should five holes of 500 feet each be
sunk, the cost of equipment per hole
will be $500, about the price of a good
whim outfit. The cost of $50 per foot
is SO much cheaper than any shaft work
as not to be comparable. Water does
not retard the work of drilling; in fact,
it is a benefit.
We can heartily recommend the use of
three drills for prospecting in this field.
Without regarding cost per foot, the
time in which a good working knowl-
edge of the ground can be obtained is
a great factor.
The sample is quite as good as a core,
and most ground can be penetrated at
% per cent the same cost per foot as
with a diamond drill, with cost of
equipment not to exceed 30 per cent.