Daily national Democrat., 1860-05-18
CUMMINGS
Under Current Sluice.

REAR SIR Your attention is solicited to a brief
y consideration oi the advantages Off II. DUN
NINGS IMPROVED PATENT GOLD SEPARATOR,
for which a Patent was granted February I'M lS60 y
The principle AID operation oft may be thus descrlb-
ed
BY means of two or more iron bars at the termina
tor OF section OF Sluice Boxes, forming a right-an-
Gle g'ating, portion of he dissolved earth fine gravel
and water is separated IRON Tire Jumps uf hard earth
coble stones anu gravel and drops into set of more
gently graded sluice Boxes beneath when they 1ow
slowly of in another direction, while the body of wafer
aud coarse material dahses down dump or .tfaun
to again taken up in sluices with the taiings from
the under current and subjected to separation
This process insures more thorough analgaination
and saving Of the particles Gold the most of which
drop through the grating into the under current Where
being subjected to less violent motion and passing
through greater variety Of rifles. they are more
likely to be finally ARE ted. 1t effects large saving
rusty gold which will not readily amalgamate II
gives more opportunity for saving Gold IN a short
distance and to scour cement without loss Of tnings
and grade.
On hill Sides where there is abundance of space. #
Is valuable adjunct 10 tall suices, where the latter
terminate at the rivers edge and would otherwise dis
charge all Of their contents into the stream the under
eut be made 10 receive the hest pDrton of
aiings aud convey them for any distal ce along the
bank.
The immense friction of rolling rocks being repo,
ed, the under current fleets saving in false bottoms
o, about seventy five per cent.
At San Juan Hill Nevada County where This inven.
on first introduced and is now ext n,ivalv nse
IT is consider ed valuable i'm mIrOvement-saving both
Gold aua Quicksilver in much larger propurtion than
the ordinary sluice without il.
TIE saving effected from ling; in one instance is
equal t. twenty i've per cent AMI might he Increased.
the amount of ecor oHy of course depending uuon The
eX ent t. which the under current IS euplovei
a testimony to the truth of the above-permlsson
Is granted Tor Tetereee to the below named skilliuI
miners at Norlh San Juan, and il NAV first he tted
hat the Inventor is himself practical miner and fas
tested the under current fully for more than two
years.
A Fraser. pavi5 Rowan
W. p. l.. Winham, J. n Clurk
Geo. W. McIlardy, Frank sonIe
ID w. Griffin, Iouis RnhriI,
Stanley hnson, Iryiny II st.9bans
o. Jennings, FplDire Pl,t C,,,,r'or,,
NJ. A. Wareham, n h. Gresiv P"N''
Sam'l Howe, August wi Sttt,oi
jas. p. Ewing, Rink
All communications should be directed tn
r. H. DUNNING & Co.
% mo I'm North San Juan, Nevada Co., Cal.
GeraniumS!
{ CHOICE lot FIR sale at the See Depot,
u ~ street, next door to Post nice,
may lO-e GEO. LAWS.
Strayed or Stolen.
iMo tACh MULES, from Pyatt's Ranch.
N one brown and one bay, mara mia hr'',,
A.l4s-A@@ ON the left shoulder similar To n
Fifty dollars reward will be paid for their ro.o,.
y | nIo VAN MULLER & co.
NOTICE.
M hereby appoint ana authorize UopACED
D1NN as our attorney to transact all husin IS
SoG,eoeeu f W'.i me y ale hrms o. ECKMAN, TENNENT
indebted to The above named firms are b-ebv not,seS
TO make Immediate payment to him At the ofsc. Of
lhe ale rns ms the matters connected therwth must
oe closeu Without delay (SignedO
j. KlNKEAD
At..,..,.,,,. A., oo., ,o,. }, H. TENNENT
-"-@l s,.lle, alII @ -o.ni IooO' ap29-1
ENGINEERS INSTRUMENTS,
OFTHEvERY BEST QUALITY AND AT THE