1965 1st 14 427m dia Ball Mills 1306 kW 1966 1st 155 473m dia Ball Mills 1493 kW 1967 1st 165 503m dia Ball Mills 2612 kW 1970 1st 18 549m dia Ball Mills 3172 kW Following poor performance of 18 ft mills at Bougainville there was speculation that the limit of ball mill size had been reached
1965 1st 14 427m dia Ball Mills 1306 kW 1966 1st 155 473m dia Ball Mills 1493 kW 1967 1st 165 503m dia Ball Mills 2612 kW 1970 1st 18 549m dia Ball Mills 3172 kW Following poor performance of 18 ft mills at Bougainville there was speculation that the limit of ball mill size had been reached
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