The copper era. (Clifton, Graham County, Ariz.) 1899-1911, 1903-03-12
CLIFTON MORENCI DISTRICT.
W. 4 scU,t. Denver Mining Reporter.
ARIZONA COPPER COMPANY


the holdings Of this company. They
are reached by way Of this c0mpany's
Coronado railroad, which runs seven
miles from Clifton up Chase creek to
the town of NIctcalf. At a point on
this road. four miles above Clifton, i
the I.ongfelIow incline-a double track
surface ,ramway about 1000 feet long.
which leads up the mountain side 10
the company'- Lpugfcliow and Hum
boldt milc-. The ores here are mined
from open cuts, tunnels. iuciines and
shafts and delivered % the shipping
bins on the railroad by way Of the
LonofelIOw incline. The mines named
adjoin those Of the Detroit Copper
company, and here, upon those noun
tain ridge. is whore the town Of No
rcuci f. located. on Humboldt and
I.ongfcIlpw grounds on a high point
overlooking Chase creek j. one Of the
Arizona Copper company'7 large con
ccutratiug mills. These mines are on
Tho wet side Of Chase creek. Their
next group, equal in development and
production to the one first named, Is
the MoIcalf, occupying Mctcalf noun
tain. on the east side 81 Chase creek
and three miles farther up stream.
This hill il pretty well houcycombcd
by underground workings, resulting
from many years operating. Its sur
face j. Greatly di~h@urcd by vast eX
cavatiOu- and open cuts, from which a
great tonnage Of copper carbonate-,
oxidizcd ores and chaIcocite have been
and are still being mined In the
deeper workings more Of a silicious
-ulphidr ore is obtained. Adjoining
this on the north is the Shannon
group, previously mentioned herein.
East Of the Mctcaf, and separated
from it by King gulch, is the Arizona
Copper Company's King mine. 1t is
reached by a trackagc in a tunnel that
thence across King gulch to the foot
Of 4 l,3OO-foot surface incline, over
which ore is brought down from the
varion. adit levels Of the King mine.
The lowest level goes in 900 feet; the
next about the same distance, the
third practically the same and the
highest $50 feet. This orc belt is
within the porphyry, the ores being Il
copper sulphidc, but highly silicious.
Just west Of the Mctcalf, on the OPP
po-itc side Of Chase creek, is the same
compauy'- Coronado mine, whose
workings near the crest of the noun
tIin are also reached by a surface it,
cline, cable cars on Same being opcr-
atcd by gravity. The Coronado is a
rich property, whose production Of ore
can he increased at any time.
The LongfcIlow and Humboldt mines
furnish about 800 tons o. ore per day,
about 500 tons daily coming from the
Mctcalf, King and Coronado. The
greater bulk Of the sulphidcs are pro-
ducrd at the Longfcllow group, al
though Il considerable tonnage OF that
grade comes from the Metcalf and
King. II is stated that the /, 400 tons
mined daily will average per cent.
copper, with 70 gold nor silver ASSOC
ciatcd with it. OF this tonnage about
!, 100 tons per day are passed through
the concentrating mills in addition to
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aon.,,,,,,,,.,1 dai1,. ,,ol.i.o n, .on.
- ,,.,.i,I ALL. .,,hi,,,,1'., - LII
,,orI, Thoro ,rn fl, .o,oo,,.a,inr
nil. c,u.a, CIir,on ,rb,., th,,.,I,
'' ''''"'
prs are located and ono nm he | oDu-
arc ''''''''' '''" "'' WI '.io ''o"E
''''"" group al 81 'nGS' "''''S oP'r
''' 0" 10" S'""' 7"'p'''' ore except
ing one, "".'' runs o." the 10" SIa'e
"N'"'"'u "'" '''"o''''c "TeS' whose
'"',''"'' '''7 are '''N'" WIZ" Tue SUI
P"'"'9 J" '"' S"'cIl'r Cnar%c' ne
'a''ln"7 from the "Nl"e-carhonatc mil
WORK are P"97'u 10 'h' l'achlh% pant
Wh'rc an extraction Is made which
leaves only one-iourth Of | per cent.
copper IN the final tallin%s or waste.
Inc leachlnE Is done by suIphurlc
3c'd, which Is manufactured by an
acid plant ON the ground that produces
fourteen tons per day.
the concentrates from the mills
handling eulphldo ores viii run about
20 per cent. copper, and these make
mp about half OF the furnace charge at
the smcltCr, the crude ore included