1916] TREATMENT OF MOLYBDENUM ORES IN CANADA 281 
while the International Molybdenum Company have not produced 
concentrate of as high grade as the Department of Mines, the recovery 
of molybdenite is said to be equally as good and the product sufficiently 
high in molybdenite to meet the requirements of their refinery at Orillia. 
THE CANADIAN Woop MOLYBDENITE COMPANY. 
The Canadian Wood Molybdenite Company, Ottawa, with mines 
at Quyon, Que., and mills at Quyon and Hull, Que., are unquestionably 
the foremost producers of molybdenite ore and concentrates in North 
America. Since the mine started operations in March, 1916, this Com- 
pany has mined approximately 5,000 tons of ore, and from assay returns 
supplied by the Canadian Wood Company together with figures arrived 
at by the Department of Mines, it is estimated that the ore averaged 
1.7% MoS: with a total content of 85 tons of pure molybdenite. Assum- 
ing that 80% of the total amount has been recovered at least 68 tons of 
pure molybdenite have been recovered from this property during 1916. 
Early in the fall of 1916, the Canadian Wood Company commenced 
the installation of a water film flotation mill at their property at Quyon. 
This mill with a capacity of 50 tons of crude daily was not completed 
until some time in December owing to difficulties encountered in securing 
machinery and supplies. The Company have also made an arrange- 
ment with the Canada Cement Company whereby the latter crush and 
pulverize the ore as it is delivered to them at Hull, Que., and transport 
it to a 100 ton water film concentrator mill erected by the Canadian 
Wood Company on the Cement Company’s grounds. 
The Canadian Wood Molybdenite Company have a contract at 
the present time with the Imperial Munitions Board at Ottawa for the 
total output from their mills at Quyon and Hull in addition to the 
100 tons of ore which they have contracted to deliver weekly to the 
Department of Mines. 
SMALLER PRODUCERS. 
In addition to the foregoing may be mentioned the molybdenite mine 
of Wm. J. Spain, situated in the Township of Griffith, in the County 
of Renfrew, and also the property of the Renfrew Molybdenum Mines, 
Limited, Mount St. Patrick, County of Renfrew, together with a prospect 
being developed by A. M. Chisholm in the Township of Sheffield, 
County of Addington, all in the Province of Ontario. 
The Spain mine was active for about the half of 1916, and shipped 
to the Department of Mines, in Ottawa, 33 tons of molybdenite in the 
form of flake and ore. During the early spring a 50 ton mill was erected 
on the property, but has not yet been operated to capacity, as the mine 
