THE MINING AND QUARRY INDUSTRY IQI2 39 
face; and though not so large as some of the other Adirondack 
mines measured by output, the property is technically in the front 
rank. The surface equipment has been enlarged during the past 
year by the erection of a storage bin at the foot of the cable road 
on which the concentrates are lowered to the railroad for shipment. 
Ausable Forks. Exploration of the magnetite bodies in the vicin- 
‘ity of Ausable Forks has been under way recently, with substantial 
results. The work was first directed to the old mines on Cook 
hill at Arnold where the ore zone has been tested by the diamond 
drill and by surface excavations for a long distance. A very large 
tonnage of concentrating ore is now known to exist there. In 1912 
operations were conducted in the region to the north of Ausable 
Forks, beyond the Palmer Hill and Jackson Hill mires, an outlying 
field that hitherto has received little attention. A well-defined zone 
consisting of lenses or bands of magnetite arranged in series has 
been found to exist, a parallel occurrence to that on Cook hill. Of 
geological interest is the development locally of apatite-rich mag- 
netites that récall the Old Bed ores at Mineville. On the north- 
eastern end of the zone the lenticular or tabular form is less appar- 
ent, the bodies showing rather irregular shapes as seen on the 
surface, and the magnetite is in places a filling or cement to brec- 
ciated portions of the syenitic country rock. 
Benson Mines. The production by the mines at Benson Mines 
was limited to experimental runs made for the purpose of testing 
out the new mill equipment. The plant has been largely rebuilt so 
as to make it more representative of current practice, and storage 
capacity provided for 10,000 tons of crude ore in order to insure 
better conditions of operation during the winter months. The 
company has also erected a power plant on the Oswegatchie river 
and will hereafter operate the mines and mill by electricity. 
Southeastern New York. In the Highlands district the Hudson 
Iron Co. and the Sterling Iron and Railway Co. were the only 
operative companies and each contributed its normal quota. 
A new enterprise was started during 1912 on the east side of the 
Hudson, back of Garrison in Putnam county. The Mt Summit 
Ore Corporation began exploratory work on a property that up to 
that time had remained practically undeveloped, though reported 
as belonging once to the Kingston Iron Ore Co. This property 
lies on the road to Tompkins Corners, high up on the ridge between 
the Hudson and the small valley occupied by Sprout brook. The 
ore is magnetite of granular to compact massive character and 
