The Clarksburg telegram. [volume] (Clarksburg, W. Va.) 1874-1926, 1910-08-18
POLICEMEN CAUSING
GREAT EXCITEMENT
IN CITY OF COLUMBUS

mat MINT 70 Wei NeullldIeu. SUI
pose the reading of the water gauge
twas 2.S inches, what would you CON
slider the reading indicated?
II. How does 1t happen that ce.-I
tain sizes of coal pillars in single
or double entry would in one coal
field be totally inadequate for the
support of the cover, while in an
other coal field the same would be
perfectly safe, and could be extracted
with comparatively little loss and
yet the thickness OF the covers OF
the veins in the two fields might be
equal?
~. II you had mine employing
$50 men, how many splits in the air
current would be required to comply
with the law, and what volume of air
should be put in circulation. The
total length of the air way being
5000 feet and the size 6x9 feet,
what is the velocity of the air cur
rent and the extent of the rubbing
surface?
10. What Is the principal cause or
danger in the firing of gunpowdsr
and flameless explosives, and how
can these dangers be overcome?
IA. Describe how you would hang a
door so that it could not stand
open? Where and when should reg.
iulators be used in conducting air
! currents in mines?
The questions for the fire bosses
were as follows:
/. What are the qualifications a
fire boss must possess and the duties
he must perform to conform TO the
law of this state?
2. Name and describe the explo-
sive gases generally found in coal
mine. How are they produced ?
Where are they found? How are
they detected? What properties do
they possess? What effect do they
have on health and life? How are
they eliminated from mines?
3. Do the gases arrange them
selves in layers in combining with
each other? Are they governed by
the law of gravity in the same order
as other bodies? Describe the way
in which they unite with each other
when in free state to mingle or
make combinations.
1 4. Describe the structure OF the
safety lamp. Show on what princi-
pal its safety depends. Would you
consider 1t still safety lamp II the
apertures and cooling surface of the
gauze were both enlarged to double
their present dimensions. Was il
ever intended to make a.safety lamp
a substitute for good ventilation?
5 State how as fire boss you
would make an examination Of a
mine to satisfy yourself that it was
safe for the workmen to enter. Give
in detail your method from the mo-
ment you enter until you return and
also state what information you
should possess and what precautions
you should take before entering the
mine.
c. A feeder of gas giving OF large
volume is struck in part of the
mine where the air current carries
1T to another part of the mine In
which men are working with open
lights. How would. you proceed to
protect these men and prevent an ex-
lplosion of the gas?.
z. In the event OF an explosion Of:
fire damp in coal mine. what course
should be pursued in entering the
mine to rescue the living or recover
the dead?
s. What precautions would you.
take to tap water or gas from aban-
doned workings to conform TO law
and secure the greatest safety to the
men employed in the mine? And
from what source could mine fore
man obtain useful data to give him
an idea of the extent Of the danger
to be encountered?
! Q. State what precautions you
would use in blasting coal in dry
: and dusty mines to insure safety to
persons employed in the mine, also
state what are the requirements of
Jaw with regard to the use OF ex-
5ploslyes and the blasting of coal?
10. What are the objections to
furnace ventilation in mines genera
ting explosive gases? And what
does the law require with regard to
the means of producing ventilation
in such mines?
II. What are the regulations as
required by law with reference to
ventilation of any old. unused or
abandonedt worl,Inps In ninaso A.a