Gold Hill daily news. [volume] (Gold Hill, N.T. [Nev.]) 1863-1882, 1871-04-26
~ceAeBksskD AIR IN MINING,


CoifRB RssED AIR IN MINING.
1t has of late become the opinion of
practical mining men, engineers and
others, that compressed air machines
could be used to great advantage in
the deep mines of the Comstock. They
have been a grand ucces as applied
to the boring and excavating of the
great railroad tunnels, as for instance
the Hoosac and the Mount Gems tun-
nels, and also in some of the principal
coal mines of Europe. Steam engines
cannot be, or at any rate have not
been, worked to advantage at any great
depth under ground. Even the little
engine worked $50 feet below the sur
face Of the Gould Il Curry mine, n few
years ago, had to be removed for this
reason. 1t also increased the heat, and
owing to the Swelling " or decompo-
sition Of the surrounding walls, the
chamber 1t was in was found very diff
cult to keep open. The very long
smoke stack required was also difficult
to keep from fouling, and or at least
one occasion the accumulated SCOT on
the inside took fire, and becoming red
hot, came near setting fire to the tim
bers Of the shaft through which it
reached the turface. Compressed air
machines could be worked with perfect
facility ut any depth, and in addition
to numerous other manifest advantages,
q better and more continuous supply OF
fresh air would be furnished through
out the mining depths than by any
other mechanical means In illustra-
ton of the advantage of this applica-
ton Of the use Of compressed air in
deep mines, we give the following from
the COHiery Gundiaa relative to its en-
ployment at the Holmes Colliery, lear
Rotterdam, England. We quote what
1t has to say referring especially to the
pumping arrangements: 1.-The air Is
compressed on the surface by double
cylindered steam engine, witheighteen-
inch cylinder and three-feet stroke,
with two air-compressing pumps,
twenty inches in diameter aud three
feet stroke, worked direct from the
steam engine. Near this steam engine
is placed q large air receiver, while
corresponding with this in the mine,
at n distance Of nearly n mile, are
three receivers connected by short cast
iron pipes, so rs TO form one. this plan
being found necessary in order that the
receivers could be made on the surface,
and connected in the pit without rivet-
ing, as safety lamps are exclusively
used ut the colliery. At this part of
the mine also Is an air engine with two
cylinders, each fourteen inches i'll
diameter, with q twelve-inch stroke,
worklngtwo double-acting force pumps
five inches In diameter, with q twelve
inch stroke. The compressed air Is
conveyed from the COMPRISING engine
on the surface to the air engine In the
mine In seven-inch cast-iron pipes.
The discharge pipes of the pumping
a~pparatus worked by this compressed
air are five inches In diameter, and
nearly one thousand yards long, hav-
ing a vertical lift Of nearly one hun
dred yards. The apparatus was first
worked OH the 9th Of January last, and
the steam engine was worked at the
rate Of fifty strokes per minute, 4
uniform pressure Of twenty-five pounds
per inch being maintained for eight
hours at the surface and at the under
ground receiver. The air engine was
worked during that time ut the rate OF
fifty strokes per minute. II hundred
and sixty gallons of water per minute
being raised"
LIKED Ir.-Parson Stoker was at
Pipsr's Opera House evening before
last to witness the fine musical, mill
tary and dramatic entertainment given
by the Choral Society, the National
Guard and members of the Opera
House troupe. The good Parson Is
down on ali these theatrical heresies
done up regularly every evening, anu
could never indulge In the wickedness
of going to see Macbeth or any portion
of the play performed; but on this
snecial occasion 1t was u Choral Society
concert, AMI the odds, YOU know,
makes a big difference. same as 4 violin
Is n good instrument for sacred music,
but a fiddle isn't. Our worthy ParSon
saw nothing wrong in the Witch Scene
of Macbeth. He liked it all, and ap'
plauded it, and thought it was jolly.
And when the green curtain wen
down for the last time he stuck to ms
seat and wanted to see more, but his
wife dragged him away. He was the
last IA out of the theater, and last
evening he went again. Ordinary
theatrical witches are what he breaches
AGAINST, but he can stand those Choral
Society witches splendid.
CARSON IrEMs.-We extract the fol-
lowing from the Register Of this morn
ing: A we'll known bookkeeper Of this
city got into Billy Wilson'S stage a
Virginia, a few days since, for the pur'
pose of returning home, but, finding q
woman In the stage with n lap-dos
about as large rs 4 mans finger, he 60
ont at Gold Hill and waited for the
cars. Harry Wright thinks the gentle
man was laboring under the impression
that the dog was Of the Sooner breed
....Jerry Schooling, State treasurer
Yesterday telegraphed Controller no
hart from San Francisco that he hat
sold all the new State bonds he hat
with him ($ll2, OO0), and wanted more
The whole Of the new issue, $l6o,ooo
has been sold, and consequently capi
talists cannot be satisfied until TN
issue Of 1872 Is put in market. ..O Gu
County Jail has but one inmate 4
present, Lon. Sinclair, who Is in TO
t. .aAvfho far fhrank, onos,ak 1tfa