Blast-Hole Diamond Drilling at Flin Flon

CIM Bulletin1943
IN June, 1940, a Long year 3420 blast-hole drill rig was purchased by the Hudson Bay Mining and Smelting Company for the purpose of experimental blast-hole drilling. The early work showed that the diamond drill could compete successfully with the Leyners then in use and by January 1st, 1941, the diamond drills were placed on contract. They may be considered to have gone into production at that date.
Keywords: Bits, Blast-Hole Diamond Drilling at Flin, diamond, stope, Thrust bearing, contract, Contracts, Diamond, Diamonds, Drill, Drilling, Drills, stope, stopes
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