Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1904-12-17
The Annie Laurie
Mine and Mill.


20 oREMosT among the gold pro-
J.. ducers OF the state Is the Annie
Laurie mine OF the Gold Noun
tain district. In fact, develop
ments made during the year. place II
pre-emInently In the lead Of all others
Of It's class.
The completion Of what Is known as
the No. tunnel and the striking IN 1t
last April OF the Annie Laurie ledge at
a distance Of 5000 feet In and i26 feet
below all other workings, not only made
good this claim, but 1t did more It
established the permanency Of the camp
beyond any peradventure Of doubt The
completion Of the adlt was great
achievement in more ways than one,
II not only increased the ore reserves
OF the company MANIFOLD, but u viii
enable more economic It's delivery 70
the mill where the precious contents
are extracted and reduced to bullion
The vein shows width Of Is feet In
this new tunnel and the values con-
tlnue as uniform as they proved to be
In the workings above. At the pres
ent time the ores are delivered through
the No. A tunnel and over gravity
tramway to the mill. The tramway
viii soon be done away with, as No.
tunnel viii shortly be connected with
No. 4, By means Of a triple compart'
ment. upralse, 7xli In dimensions, The
work Of making this upraise Is now In
progress. having been run about 200
feet and will be finished In the early
part Of February next This done, all
The ores will be taken out Of the mine
thereafter through the No. adit, which
IS on d level with the crushing depart
ment OF the mill.
In the tunnel 30 pound steel rails are
being laid, over which trains OF 4-ton
mine cars, pulled by electric loco
motives, will be operated. The tunnel
will be electric lighted throughout and,
ON a whole, will be as well, II not the
best, equipped in the state
I'm conformity with the changes that
have been taking place In the mine,
the company, during the year, added
new equipment to the mill, raising us
capacity To 200 tons a day and 1t Is
nONHllle INIlNtl uNAiNA'ilo wa w ''Nf
20 the plant next year.
During the past four years
the Annie Laurie, Notwithstanding
an extensive campaign OF develop
ment has been carried on has palu
dividends to It's stockholders aggre-
eating the sum Of S249,ol6 and at the
present time is paying at the rate OF
sl2,5OO monthly,
The Annie Laurie properties con-
slsts of total Of 70 claims, covering
an area OF 1900 acres, a cyanldlng
mill of the capacity already mentioned,
two water power plants located SIX
miles from the mine, besides an aux
Hilary steam plant The company
generates its own electricity used In
the operation Of the mine and mill
The Annie Laurie mine has in tun-
nels. drifts. slopes, subleyels, raises,
etc. over four miles OF workings and
practically all Is In pay dirt
The average cost Of mining and
milling has been estimated TO be about
ss.b0 per ton, or TO better Illustrate
$40 ore leaves the handsome profit to
the owners of some So 80 per ton.
There are over 300 men employed In
the mine and mill at the present time,
ANNIE LAURIE MILL.
On reaching the mill from the mine
the ore Is fed over grizzlies, passing
directly "a the Gates crusher and then
20 the ore bin which supplies the
DRYER. There are two discharge gates
at the lowest point OF this bin, and
through these the ore IL passed by
gravity to the Argale tubular dryers.
where Il Is dried sufficiently TO admit
OF crushing and grinding In the rolls,
The fine crushing department Is sep
arate and complete Ia Itself, the ore
from the dryers. after passing through
f. being delivered into a large pulp
bin. mt which point the teaching de-
partment takes II In charge, In this
fine crushing department, then, there
is one 6x2O Sturtevant roll Jar crusher,
each running In connection with over
head screens.
The reduction Is effected gradually,
the FIRST set Of rolls taking the coarse
~ crushed ore which has been deliv-
cred from the dryers and breaking II
up into smaller particles. II Is then
elevated and screened the oversize go
ing to another set Of rolls 10 be there
still further reduced IN size. After
more screening and crushing the ore
Is finally delivered into the pulp bin
before mentioned, an Of II having
passed through what Is known as
"4O-mesh screen" This fine state OF
division II necessary 20 break open
the PARTICLES OF quartz surrounding the
gold and so expose the metal 20 the
action Of the cyanide solution with
which II comes In contact In the sub
seQuent teaching process
The teaching department has been
twice extended since the starting up
Of the mill and is now capable OF han
ding larger tonnage than ever be-
fore. The equipment consists OF l6
steel tanks, varying In capacity from
lSO to 24O tons, and each Is provided
with a alter bottom and Argale gate
valves through which the tailings are
sluiced when the extraction Of values
Is complete, The ore is taken from 'he
pulp bin In cars and dumped into I've
tanks over a system Of distributors