The Coalville times. [volume] (Coalville, Utah) 1894-1923, 1900-03-16

HOW TO WORK 4 MINE.


- '"' hiii'lNls " utuiu upon
uil sues from pruspcciurs. mining men
var eAcellence.ns The Frcnchmnn says
ana Would-bc mining experts. This
bon mot IL applied To sinking dlscov-
cry shhits upon discoveries Of mineral.
bearing veins or Outcrups. The greatest
tallAcy that can be-. says Carl Wulstcn
IN Mining Reporter. Surprising the
pfotpector follows the mineral In it,
iortuous strike, dip. pitch and condl.
uon; with probably couple OF hun
drcd fee, he viii have shaft which
has become utterly imprncticnble for
extraction ana which has become IA
Source Of continuous extra expense.
worry aud frequent accidents.
was once put In charge Of mine.
the benvcnwOrth, which was $50 feet
deep, with n working shaft which had
followed the mineral" ! found six.
teen different slopes In the shaft, and
eleven rollers made Of Iron pipe, over
which the steel holstlng rope had to
run. Before had been la charge forty
eight hours had put In four new rol.
lers, and had to make two spllccs In
the steel rope, lind three buckets up
set In their transit and two pieces OF
wall plates dlslodged In the shaft And
as the owners VI the mine did not want
60 spend any extra money upon the
mine could not sink a new aud per.
pendlcular shaft upon the really good
mine. The consequence Of this tOrtuouH
work shaft being the only avenue OF
ore and rock extraction was, that all
i could do, | could not make the mine
produce a cent over and above working
expenses. and within month had
60 shut up the mine FOR good. A good
mine gone to the dogs for want Of a
practical perpendicular holstlng shaft
Follow your mineral! or course: but
In n different way than by sinking n
shaft upon the vein aud following II In
all lis differences OF strike. dip and
pitch OF the actual ore vein. When the
vein NJ mineral has been discovered
and found to be OF value, by following
Il, cay, for thirty to nifty feet Ia depth
car, iully sampllng and nssaylng the
extracted ore, 80 as to be sure the dis
coyory viii pay to develop further In
depth. do not stop until solid walls or
permanent confines OF the ore vein
have been reached Then get COM
petent surveyor to survey the dlscov-
cry. by strike and dip let him make n
profile OF your 500 feet length OF
claim center line Peg your 1900 feet
properly and number the pegs consecu-
lively from one ON. Plat course aud
profile properly. Now establish the
course OF the vein rs discovered, say
by making four or six cross cuts upon
IL at four or HiX different places on the
1,JOO-fOOt claim, 80 as 10 be able TO cx-
pose the vein plainly ana be able to
obtain the dip OF the vein and Its walls,
n there are any. which can be properly
read by n cycloneier. Now conduct the
course line as n perpendicular line. and
plat upon II your four or SIX openings
and their respective dip. Such plating
Will very correctly shaw where the ore
vein II upon the 500 feet length OF the
lode claim.
Thus Il VIII be seen that the vein, In
maintaining lts straight course for the
whole length OF the center line OF the
lode clnclm when projected according
90 It's dip forty-hve degrees south from
perpendicular. over the profile contour
of said 1900 feet OF the center line Of
the lode claim, looks upon the ground
plat torluOus-llke, and still upon the
level Is straight. Now there Is no DIFF
flculty for a perpendicular shaft to 80
down hundreds OF feet. for at every
100 feet the engineer who has to do the
surveying OF the mine lin German.
Observation-Disclosures can very easily
tell how far each crOss-cut at each 100.
foot level has 10 be- made TO cut the
vein, II II maintains Its course and dip
III not, the cross-Cuts ut every 100 foot
level viii tell. To do this correctly the
engineer has TO establish the true me
ridlnn at or near the work shaft on the
surface permanently, and carry such
true meridian underground TO each 100
foot station In the perpendicular work
shaft.
The competent engineer knows thai
this procedure IL troublesome and diff
cult to attain. hang down four plumb
hobs, one In each corner OF the shaft
Then connect eacn corner OF the shaft
on the surface by transit with the tru,
meridian established ON the surface
A correct triangulatlon has to be made
from the three stations OF the true me
rldan with the four plumb bob sta
tons on top OF shaft. That gives m,
two cross-courses and two rlght-an
gular courses for each plumb-bob sta
ton below. Thus rectlfying the las
lrregularity In measurementand course
A collmntOr Is also a very dcslrnbl,
instrument for use In this work Thii
instrument Is transit accessory which
can easily be adjusted TO any ilrst-clasi
mining transit. II lnsurcs absolute cor
rectness. After the mining surveyor
has carried the true meridian by trui
nngle measurement Into each level sta
ton OF the mine he can very easily es
tabllsh guide marks for the cross.cut
and drifts, so that the mine foreman
or shift boss cannot fail 10 cut the or
vein at every level. and thus Insure cor
rect connection with the perpendicular
shaft at each level. That lnsures
solid holsting shaft, permanent eleva
ton. no trouble nor extra expenses AM
an economical extraction. But II tn
holstlng shaft is runk In the ore body
following the mineral, what terrible
things may happenl We have such al
example In the great Bassick mine II
Custer county. The work shaft Of TIL
great bonanza was sunk right In IN
big mineral deposit the ore was stopei
out all around the shaft and when IN
mine was shut down during the thiT
teen years OF litigation among IN
owners, the whole mine actually wen
10 the dogs as far as It's working shat
WAS concerned. When Interested par
ties attempted 10 unwnter the mine IN
tlmbering, mudsllls some sixty fee
long, all went down into the big cave