The Yale expositor. (Yale, St. Clair County, Mich.) 1894-current, 1911-05-04

rate whereas every other country is showing
decrease"
They pointed out that the European mines are
deep and beset with many dangers we are not
troubled with while our mines are easy and
should be safe to work. because the veins
large and thick and run horizontally. And yet they
showed where kill four times many men as
France.
This is the condition Of our comparatively safe
mines of today, but, they showed, we are now
beginning for the first time in the history of coal
mining in this country to open veins that are real
ly dangerous. We the very threshold Of
and far more hazardous period in coal mining.
and, unless we take active measures, we are going
to have a series of mine explosions which will
appal us-even II there are no Americans killed.
Out of the report they made has grown the
Pittsburg testing station of the department Of
mines, which is now taking up the most serious
cause of mine explosions-electricity. There would
be no objection to electricity under proper condi
tons, but the difficulty with it at the present time
Is that the electrical machinery sparks. In
gaseous dusty mine, given the right conditions,
and It needs only spark to kill every in it.
1t should be used only in mines where there is no
chance Of the accumulation of gas; but, in point
of fact it has been adopted most generally by the
mine operators of the gas belt of Western Penn
sylvania and West Virginia. In all that country
there is never any telling where gas will be struck
next and the cutting machines, which work ahead
and are most likely to open gas pockets, are oper
the face of the coal. Formerly it the rule
and in some states the law to bore ahead and test
for gas pockets but with the modern electric cut
ting machines all such precautions are out of the
question.
The case against electricity, when used for pow
er. is the most serious consideration in the whole
of the coal mining situation, because it has made
coal production cheaper and, that account, no
matter how many deaths it causes, 1t would be
extremely difficult to drive it out of the dangerous
coal fields. The saving averages about three
cents ton, but here is instance of the lengths
to which operators have gone to make that miser-
able profit When the dangers from electricity
began to be understood, its was permitted only
in mines where open lights safe SO the OPP
orators TO dodge the law, tore out their covered
lights and sent men into gaseous mines with fam
inc torches in their hats Then, until some terrific
accident happened the mine inspectors were ST.
fenced
Perhaps we are not to blame the coal operators
for reducing the cost of production to the lowest
possible point; but when they do at the present
tremendous cost Of human life it is high time they
feel the stern hand of regulation So far however,
they have always been able to prevent the real
of some of the worst disasters being laid to
electricity. A definite cause in any event, is an
adherence to them. For If the blame can be
placed on the operating machinery of a. mine, ii
opens the way to damage suits contingency the
coal operators adopts az escaping
This whole situation was never better shown
than in the terrific disaster at Monongah No g, in
West Virginia, which hid the longest death list
in the history of American coal mining The acct
dent occurred on December 6, 1907, Immediately
after trip of fifteen loaded mine cars liberated
by the breaking of an iron coupling pin had run
back twelve hundred fcet eight per cent
grade raising thick clrJd of dust and ending By
causing short circuit ~ the electric current But
when it came to fixing tho cause electricity was
hardly considered. fact hat is particularly note
worthy as the decision WAS severely criticized aft
erwards in engineering journals.
Testimony that tended 20 prove that electricity