The copper era and Morenci leader. [volume] (Clifton, Ariz.) 1911-1929, 1920-01-16
{ NG| N NEERS MEET
At AJO A BIG
SUCCESS
Arizona Section of The American In
stitute of Mining G MetalIurgical
Engineers Held Jan. So We'll
Attended. A Profitable G
Successful Meeting
(Reported By E. Jacobs)

(RepOrIeu by Il. JacCDS)
The meeting of the Arizona Sec
tion of the American Institute of Min
ing and Metallurgical Engineers held
at Ajo, Arizona, on January and 6,
was attended by about $50 members
and visitors. the latter including mem
bers from California, Montana, New
Mexico and Texas, besides the Presi-
dent of the Institute, Horace v. Win
chell, of Minneapolis, MINI. and |
Bradley Stoughton, it's secretary. of |
New York. Members of the section |
ton, Douglas. Globe, Jerome, Miami
Morenci, Phoenix, Tucson and other
parts of the state. and from Cananea,
Mexico. w. G. Mcbride, of the Old
Dominion Co., of Globe, chairman of
the Section, presided over the sever
al sessions held and H. L. Norton,
secretary, also of Globe, carried out
the secretarial duties.
On Monday morning January 5,
members and guests were taken to
the New Cornelia Copper Companys
mine, where there was demonstrated
| the method in use there of shooting
low benches. Seventy-five holes
were shot; in these about $4,000
pounds of powder was used \ and it
was estimated that approximately
1880 tons of ore was broken out
by these blasts. There was also Civ
en- a demonstration of block-holing
boulders without the use of caps. Both
demonstrations were successfully car
ried out and proved of much inter
est to the visitors. From the mine
the party proceeded to the company's
coarse crushing plant to see Gates
No "a syratory crusher at work; next
the Zig failing dump was visited and
then return was made to camn for
luncheon.
In the afternon DR.. L. d. Ricketts,,
one of the directors of the New Cor
nelia Copper Company, extended a
hearty welcome to Mr.. Winchell, pres
ident and Mr.. Stoughton, secretary,
of the Institute, and to all other visi-
tors. Mr.. Winchell acknowledged the
courtesy and then gave an instructive
description of the Ashio Copper Mine
Shimotsuke, Japan. Mr.. Stcughton al
so expressed appreciation of the cor
dial welcome received. and then told
of the valuable civic work the A. I.
M. E. had accomplished as well as
it's well-known great services to the
, mining and metallurgical industries.
: knowledged the compliments paid to
members of the local section by the
visiting officials of the parent Insti
tute and the hospitality of Ajo mem
, bers and their residents. An illus
trated talk on methods of blasting and
the operation generally of the New
yCornelia Copper Mining Company at
, Aio in connection with open-pit min
ing by F. Ekman, the company's mine
superintendent. concluded the first
days business.
On Tuesday morning, 9Th, an inspec
ton was made of the New Cornella
. Copper Company's crushing and leach
ing plants, electrolytic tank house
power house, shops, and experimental
fiotation concentration plant In the
afternoon a technical session was held
The first paper presented was by Mr.
Hawley. of the international Smelling
Company, Miami, whose subject was
The Use of an Electrolytic Method
in Assaying for Determining Copper in
Foul Solutions. The important top
ic of Leaching was next taken up, DR.
, Ricketts, introducing it by an address
!. on Leaching Problems in general e
%. Van Barneveld, of the State Bu
reau of Mines, Tucson, followed with
talk on Leaching with S02 Gas. H
w. Aldrick, assistant general super
:. intendent Inspiration Cons. Copper
leo. Miami, contributed some parti
D culars concerning leaching expert
ments on mixed ores at the Inspira
J ton Cos plant. Arthur Crowfoot, sup
. erintendent of the Arizona Copper Co
mines of Morenci. gave an account o
Leaching Experiments at Clifton, Ar1
y zona, carried on during the last eight
cen months, these having been large
lv cont1ned to the treatment OF mil
failing containing copper value botf
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