Sunbury American. [volume] (Sunbury, Pa.) 1848-1879, 1854-06-03
TILE PROCESS OF COMING GOLD.

The United States mint has been compile
ted in San Francisco and is probably ere this
time in active operation, coming down daily
vast treasures of golden ore. II was intend
ed that it should be prepared 10 coin thirty
millions Of dollars yearly. The following
description of the system which is about to
be established there, will afford good gen.
eral idea of the ordinary process of coming
gold .at,'f .t.. --- t-..-
The metal, after being received in the de-
posit room, is carefully weighed and re-
ceipt given. Each 6eposiie is then melted
separately in the melting loom, and moulded
into bars. These bars mex, pass through the
hands OF the assayer, who with chisel,
chips small fragment, from each one. Each
chip is then rolled into thin ribbon, and
filed down until il weighs exactly ten grains.
1t is then melted in a little cup made OF cal
cined bone ashes, and all the base metals,
copper, lin, &c., are absorbed by the porous
material of the cup, or carried off by oyyda-
ton. The gold is then boiled in nitric acid,
which dissolves the silver which it contains,
and leaves the gold pure. 1t is then weigh
cd, and the amount which it has lost gives
the exact propoRion of inpurty in the ori-
ginal bar, and certificate of The amount of
coin due the deposior is made out accord
inaly.
After being assayed, the bars are melted
with certain proportion Of silver, and be-
ing poured into diluion Of nitric acid and
water, assume a granulated form. In this
state, the gold is thoroughly boiled in nitric
acid, and rendered perfectly free from silver
or any other baser metals which may happen
to cling to it. 1t is next melted with one.
ninth its weight in copper, and thus alloyed,
is run into bars, and delivered to the coiner
for coinage. The bars are rolled out in a
rolling mill until nearly as thin as the coin
which is 10 be made from them. By pro-
cess OF annealing, they are rendered sufii-
cieniy dnctile 10 be drawn hronsha longiiu-
dinal ori6ce in piece Of steel, thus reducing
the whole 10 regular width and thickness.
cutting machine next punches small
round pieces from The bar, about the size of
the coin. These pieces are weighed sepa-
raiely by The "adjnsters," and il too heavy
are fled down-if too light they are re-mel-
ted. The pieces which have been adjusted
are run through milling machine, which
eompresses them 10 their proper diameter
and raises The edge. Two hundred and City
are mlled in a minnie by the machine -
They are then again sofiened by The process
Of annealing, and after thorough cleaning
are placed in tube connecting with the
Stamping instrument, and arc taken thence
one at time by The machinery, aud stamp.
ed between the dies. They are now finished,
and, being thrown into box, are delivered
10 the Treasures for circulation.
The machinery, Of course, for all the pro-
cesses must be Of tho incest kind. The
weighing scales alone, IN the deposit room
OF the California Mint, cost $1,000.
A NEw ASD BEAUTITuL TRrE IN oREGos
A Mr Brooks, writing hom Olympia, Oregon,
says;
"a strange and beautiful tree has lately
been found here, which Is from oas TO seven
feet high, with leaf resembling that OF tho
pear, aad the lrunk aud bIaaehss those Of The
emnse, The upper side Of the leaiis coated
wilh gum, OF tho eonsisierce Of oil, aud il Is
highly f'agTan', lhs odoI resembling that Of
befgamoI OF 'iPs frui. Il will bs a highly
enamso'al aud dssi'abls addition 10 our gaf.
dsns, asiI isan evergreen"
cuoLERA Faoa LlsVoA DRlKglss Seven
Pslseas IA tho employ oI MI. Thomas Gillian,
"a Missouri 'eesnlly died Ol eholsla whhli
no Of 'h'ss day. rhsy had bssa paid on
Saturday I"I sosae esla work, anj 0n Suaiay
iadslged ys'y freely Ia besr ale, eiisl asd
cakes, ani ~ nlshl maie hea'iy sappsr oa
lLn-A I-h Dunn IAn MIN .llL "a ADu.L..