The Ely miner. [volume] (Ely, Minn.) 1895-1986, 1938-04-07

inder from the hole, in case this is adj
visable. A fifteen foot core, five and a
half feet in diameter weighs in the
neighborhood of twenty tons and this
huge bulk is hard to handle although
the derrickS installed are capable of
raising this immense weight. To get
rid of such weighty rock is another
question and requires specially con-
structed and reinforced cars and. tracks,
besides special unfolding machinery.
After the drilling of given number
of feet, the cylinder thus employed is
hoisted out of the way and preparations
made for hoisting the core, which has
been wedged and broken off in the bot
tom of the hole. On the California job
half stick of dynamite was used in
cracking the core. The attendant
fumes and bad air resulting from the
explosion, experienced in Grass Valley,
is done away with on this job by means
of wedges. Luck plays some part in
breaking the core for hosting.
Another cylinder within cylinder is
then lowered over the core. The bot
tom of the inner cylinder is wedge
fitted and when the hosting pressure
is applied is wedged against the outer
cylinder and the core in such a manner
as to grip the piece for hosting. After
hoisting, the core is placed on a car
and the cylinder removed by the der
rick. After the removal of the core
from the hole the drilling is resumed
and the hosting operation repeated.
At Tuesdays demonstration for the
officials, a four-foot section of core
was raised. This was the second hoist
made, the first having been the latter
part of last week when tests made
proved the workability of the drill pro-
cess for shaft sinking in solid rock
The core raised today was drilled in
three hours, the machine being capable
of sinking Is inches an hour, it is
said.
Sometimes, it was explained, there is
la break in the rock at the bottom OF
the pit necessitating grinding up OF
fragments in which operation much less
footage is obtained than if the ledge is
solid. The hole at present is down
a matter of fifteen feet with the hand
dug hole for a start and the drilled
portion combined.
To begin actual operations, Mr.. New
som brought with him three trusted and
expert employees. They are Warren
Lyons, Dan Mclaughlin and Royal
Widener who are at present doing the
work of drilling, hosting and testing
| the machinery. At the same time
these men are training force Of tried
employees of the Zenith in the work
after which they will turn the operation
over to the men trained.
The shaft is being drilled about 300
feet south of the Zenith power house
and in a direct line south of the shaft
at the mine. 1t is expected that solid
rock will be encountered the full depth
of the shaft to be drilled.
An engine house has been erected to
house the hosting machinery. The
engines and hosting gear are electri-
cally equipped of immense power. The
drill house and it's complement of ap-
paratus has been housed in and every
precaution has been taken to preclude
accidents with the installation of safety
devices of every character and for every
spot which might prove a hazard.
Besides the high officers Of the
PickandS, Mather Company at the
demonstration on Tuesday, Superin-
tendent Ben S. Richards of the Zenith
mine played host to Superintendent B
10. Strachan of the Oliver and his force
of department heads. The department
heads of the Zenith also were present
when Mr.. Newsom and his crew made
| the showing