306 The American Geologist. November. 1003. 
vein is said to be wide and to date there are seventeen pros- 
pects on it. They are owned by Ellison and Company. 
0/7. — Prospecting for oil in now going on in the Pinal 
mountain region. The Pinal Parafine Oil Company have now 
drilled a well to the depth of 1053 feet. The drill is in gray 
sandstone, in which the occurrences of shale are frequent. 
Judging from indications, an abundance of oil will be ob- 
tained. 
Mining. 
Placer. — The Quaternary gravels on the Cibicu divide and 
in the vicinity of Globe and at many other places in the region 
are known to contain placer gold, but to date no placer min- 
ing is carried on because of a lack of water ^or hydraulic 
purposes. 
Mines. — For years the Globe district has been one of the 
leading mining regions of Arizona and such it is today. Among 
the mines of the region are : McMillen, Christmas Lode, 
Rescue, Mineral creek, Pinto creek, The Globe-Boston Cop- 
per-mine, and the Old Dominion. 
McMillen, situated about 15 miles northeast of Globe, is 
an abandoned mine at the present time, though work will 
likely be resumed in the near future. The ore is silver and 
at the surface was paying in quantity but at a depth of 400 
feet the ledge, eight feet in width at top, tapered out to a thin 
edge. The ore is on a contact between volcanic rocks, and 
the Palaeozoic. 
The Rescue mine is situated on a contact, as my memory 
serves me now, between Archaean granite and Palaeozoic rock. 
The lode is silver-bearing and runs on an average from 100 
to 250 ounces per ton, some of the ore running as high as 
3,000 ounces, the vein, however, is not large. 
The Big Johnny mine is situated on a large lode. The ore 
is a high grade, exceeding 20 per cent, in copper and some 
of it running high in silver. The company controlling the 
mine, W. Pohl and H. T. Wendlehorn, sell their ore to the Old 
Dominion Mining Company. 
The Pinto Creek mines are on a contact lode between 
rhyolyte and Archaean granite; the ore is principally gold 
and is found in paying quantities. The properties are owned 
by the Arizona Hancock Consolidated Co. Resides shafts 
