The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1923-10-18
might be useful

might be useful.
II possible. barricade should be
near valve in the compressed-air
pipe line. IL air is used The valve
should be opened TO furnish additional
air If there is no compressed air.
the next best thing for miners behind
a barricade to do is either to lie down
on the floor in the hope that the
rescue crew will find them before they
are overcome. In this relaxed position
they will breathe much less air than
if they exert themselves
As soon as a place is chosen for "a
baricade. its erection should begin.
for the gasses often travel quickly
The ventilation should be shut off as
soon as possible by the opening of
doors and the hanging of brattice
cloth or by the moving of a door to
new place across an entry. The
permanent barricade should be started
80 TO IS feet from the brattice cloth
Always barricade off as much of an
entry. room. drift or cross-cut as pos
sible, so as to provide a maximum
quantity of air Before constructing
n bulkhead make sure that there is
no many-way or other connection with
other workings through which gasses
could come. At some place outside of
the first stopping. if more than one
stopping is built place a sign of some
kind to show that men are behind it,
II a barricade be made of coal. slate.
or other rock. or ore, build two walls
TO 3 feet apart and I'll the space
between with fine material or mud
The stopping must be air-tight. Board
stoppings are not as easily made gas
tight as those built of dirt or rock and
DIRT All chinks and holes in the bar
ricade should be stopped with clay.
rags, clothes. and similar material.
Coal miners should remember that
they should not barricade themselves
in any working or other place that
may accumulate and be ignited IN
some way, causing the death of the
whole party.
If a piece Of pipe is available. it
should be placed through the stop
ping and plugged at the inner end in
order that tests of the air outside the
barricade can be made by removing
the plug
After the barricade has been built,
in order to conserve the oxygen of
The air. the men should keep as quiet
rs possible. However. occasionally
somebody should walk around so as
10 mix the air All the men should not
in one place
When the bulkhead is erected test
{ for leaks by means of a candle or
carbide lamp. The way in which the
lame of a lamp or candle burns will
show the condition of the confined air
md how the oxygen is being used up.
All flame lamps should be extm-
rushed, in order not to consume any
more oxygen than necessary; also it
S desirable not to use oil. carbide.
md electric batteries needlessly
Men barricaded in a metal mine
should signal frequently by pounding
IN the air pipe and on the back Of
he rock drift; or, in a coal mine 10y
on the rib or the roof IT.
lurng their retreat from gases, min
ars find any chalk they should carry
/ piece with them. Directions for
'elief may be written on DOORS or an
lrrow may be drawn to indicate the
course the miners took in retreating
rhe flame of a carbide lamp makes
rood letter on timber or rock
Detailed information regarding the
rection of barricades during mine
Tres or after explosions is given in
diners' Circular 25, by J. w Paul, b.
}. Pckard and NJ. w. Bernewitz,
Fhich may be obtained from the De
of the Interior Bureau of
fines. Washington, d c.