The workingman's advocate. [volume] (Chicago [Ill.]) 1864-1877, 1869-05-08

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las been clearly proved by Experiments.
some Of them have taken part in--that at.
mospheric air and explosive ere r4Aed lray
cling al the rate Of eiFas cubic feet per sec.
ond, would explodo. aud that is a very small
quantity OF air, aai near enough Tor the
smallest OF our mines; for think, as FAR a.
70 Judge, there are not les than three or
COR ,housand cubic feet per lDinuie in the
wors.-venGla'ed oolliery we have, and that
RIO FAR too little, for we Ight 10 rave al
least twelve Thousand cubic feet per minute,
and IN some Of our mines that are subject 70
hydrogen gas, we ought to have a. least
twenty thousand cubic feet per minute,
which might get quite easy. Ventilation
Is greatly neglected BY operators having I'M
justified men for bosseS-such as trA6esmep
OF different kinds-and the operators have TO
pay pretty hesvy expenses for their igco-
rance. ! bavr known some Of them 20 have
60 pay AZ high IS $4,000 by gross neglect
~ ignorance, and some colhor,es lost every
thing, besides TIE loss 81 life. Nov, As FOR
the article above naUied upon hydrogen and
caTbureted arirogea. 6 Says. "lt Is ciscOy
cred by the Increase m The ne az the e
and susl blue flame being di covered
Now, there are three different kinds NJ ey-
plCsive gas that we have 70 contend with n
The mines. There l. carbui eted hydrogen,
10 US most pure state; a light csGbrreted
hydrogen and then, sgain, there is heavy
cashIreied by0rogen-sl very dangerous to
c5u end with. The icrmcr ct these is els
covered by no Ca at an upon the top Of the
Fnfrta AZ NE r8y VS. 80 fine
needle p0s.iT; il is very dangerous, AM takes
q nan Of great experience TO discover &C.
The second = discovered by d cap on the top
&C The fame, vary ing IN size according as the
gas Is mixed with tbs carbon; the latter, or
heavy carblretad hydrogen, lies at the lot.
toEH III tie vein, AID Is very dangerous be-
c4rss il Is not expected by The miner. Be-
.ore ~ Is aware OF II, he is envsloped 10
hsme, and is either killed or very severely
burned.
The two former Of the gaSses lie at the
top Of the vein, and are generally expected
by the miner, and aTc not 50 apt to take bin
BY surprise. Now as i1r the safety lamps
there IS only one safe amp sn0wc, that is
the Stephenson lam better known as the
Georjy lamp. Il is very Ike The Davy amp
10 all respects but one--it has a glass tube
Inside a tha gauze, and upon the TOP Of the
glass tube there Is a cap made Of copper,
perforated with holes. This Is perfectly
safe lamp, and one that can De depended up
on. i1r it viii lot burn amongst cas- when IL
is dangerous, but, as soon as the gas ex
p.odes 70 the lamp, i goes cut But, IL the
case ~ the Dsgy lamp, as soon as il ex-
rlctgs inside az the lamp, il continues %
born; ana. u not speedily and very csrelui-
lY Withdrawn, will become rcd bot and soon
burst, sn0 then Tremendous explosion, with
loss Of life aad property, ensues. There
have been more explosions, and hundreds Of
more lives lost. since Jac D4vy lamp came
ilt0 usg, than there were before, and simply
because the iaup ~ uct fully undcTsLoO ,
ard men thIk hey aTl safe hen they have
a Davy i4mP, and q these lamps aro not SAT.
ir lat vt Hs, they are ttu times more Dang r
oas lD those p'tl log veins where they are
s--ier, i0 sudleu falls ID coal. and then
rush oi stm sphlric air ard es D. oslve cas-
VII hny-and then tlc natural Const guenc.
wou1 bs 10 explosion. 1hs Dtvy lamp 4
cn.y good Tor what Il Sss drsl i,iendc
that is % explore be mines With, in search
log ior gas, So as o. prevent men from work
.ng ar ngstit.
Carbon or black damp Il cous der,d by
CAS- N9r6mgn w mines US be YeIy simple,
but Y Is fatal ID hea,t and ne. Butgas L
vii not explode, it q llon-ht bsrul,ss.
Nevertheless, 90 is more dangerous than the
hy orogen, because where there is hydrogen
there must b4 some fresd -ir; but, where
there US carbon CarburottG aciI zAs, there
"a nJ fresh Rir Bosses clre very Httle ab.ut
ait. art the men must n0rg among it, and s.
proves fatal 10 taeir health ana su0rteus
their lives lumber of y afs. J, seems vsry
sra se That t1is snbi-cg IS so D.ge tbouglt
about aHd So Er14sy neglected 1y the men.
M heu INGREDIENT seuds 4 strip i0 IVA, he
generally puts d qlaliii-i man ~ board tu
uA- alEc 81 Der, and one Wuo j. pracu.
eel s8i.eG understanding BIS mpass $40
chart s9 hat the voyage may be usde WITH
something De safety, but d, seems that any
enc - COED enOuEl 10 lsEe charge of tie
mu,si and Qi Ihe lives of hundreds Of
men. "A miners lig is Z dangerous une al
h,st, and R.su AT possible care l. taken.
81 sli stti ne dangerous DO think tuat
SIT ,be care cugh. 20 be taken that could be
Az preserve Che lives Of tie men aud .he
property ol he operators. G.I.I.