Canadian Part HeadQuarters has launched the commercial-scale manufacture of a rotary-percussion mechanism for the PP-63 hand rock drill of Russian origin. The rock drill weight was reduced by 5 kg. Rock drills furnished with the Canadian rotary-percussion mechanisms were tested at a gold mine in the Magadan Oblast. During the time of their operation the drilling rate was 20% higher than that provided by rotary-percussion mechanisms of Russian design, no failure of the Canadian mechanism was registered during the trials.

№2 (102) 2012

Mining Industry Journal №2 2012, p.70

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