Freeland tribune. (Freeland, Pa.) 1888-1921, 1896-07-23
MINE lNSPECTORSHIP.
Seventeen Applicants Answering Oues-
tions Before the Examiners.

ho NHhcSodIIt Oh monday an eN-
animation was begun for applicants
for the position of mine Inspector
to ill the vacancy caused by the resig-
nation of James r. Roderick, of Halle
ton. The examining committee com
priScs Elmer III. laval, William r.
Jones, Wilkesbarrc; Anthony Riley,
IIazleton; John w. Berry and Allen
Motfat, Pittston. The applicants are:
Avoca-Edward E. Reynolds.
Wilkcsbarre-A. j. Gallagher, Evan
II. Williams, Harvey Faulds, David f.
Hughes, Martin Brennan.
Audenried-PetcrS Sheridan.
KingstOn-B. RosSer.
Dury Boyce.
Dunmore-William Il. Wilson.
Upper Lehigh-Joseph j. Shaw.
Luzerne Borough-John $. Mcdonald
Nesquchoning-Wiliam II. Davis.
Beaver Mcadow-James Rowe.
Drifton-William e. Davis.
Sugar Notch-P NJ. Boyle.
Frecland-George McGec.
The list of questions asked so far are
Us follows:
Give name, age, place of birth, post
Office address.
Are you citizen of Pennsylvania,
and, if naturalizcd, when and where
naturalizcd?
Are you pecuniarily interested in any
colliery in the fifth anthracite district?
What occupation have you held in the
anthracite coal mines of Pennsylvania?
Give the names and location of the
collierics and the time employed in each
situation.
With what methods of mining have
you had experience? Give the names of
the mines, with Il brief description of
the system adopted in each.
Explain also the best methods Of min
ing for the fifth anthracite district.
Give the length of time and nature of
your experience with noxious and explo-
sivc gases, naming the colicries in
which said gases were found.
Describe the modern method Of con
strncting dams in mines. Give diagrams.
How is the pressure of water on or
against dan S calcl lated? Give example.
Suppose two splits of a vein are work
ed as follows: Each split feet thick
and separated by s feet of rock. In the
lower split the pillars are 20 feet wi,
and chambers 2s feet wide. In the up-
per split the pillars are directly over
those in the lower split, but are larger
and project over 3 feet, being 2G fee,
wide. The chambers are 2G feet wide
The pillars in both splits arc 60 feet
long and their ends uniformly over each
9th r. The width of the cross headings
in both splits is $ feet Overlaying the
upper split is $50 feet of rock. assumed
to weight $50 pounds per cubic foot and
to be non-clastic. Above the rock is
$50 feet of sand and gravel, assumed TO
weigh 100 pounds per cubic foot. The
intcrStratum of the rock is assumed to
weigh $50 pounds per cubic foot and the
pillars (coal and rcfuse) ITO pounds por
cubic foot. Give, first, the shear in tho
interStratum of rock at the edge of the
pillar in the lower split. Second. the
greatest bending moment or the stress
on the top and bottom Of the intcrstra-
tum and the location of the same.
What are the special causes of danger
peculiar to the fifth anthracite districtp
Nhat precaution would you take against
such danger?
What are the causes of a squeeze or a
caNe-ln in an anthracite mincp De-
scribe It's progress and the dangers
usually attending it. Explain your
method OF preventing squeeze, and for
limiting the area of caye-in. What
precautions should be taken to insure
the safety of workmcn while the squeeze
is in progress and after the cave has oc-
CURED.
What are barrier pillars? Give u
good rule for determining their width?
Martin brennan, one of the appli-
cants, has dropped out of the race.