/biz/ - Business & Finance

>>58092637
Sandviks are great too, but I can see how a continuous miner could struggle in a harder rock environment. Coal is soft, after all -- can crumble in your hand (though anthracite is considerablly harder than bituminous).
Do you know if they're using Kennametal bits on the CM head? Those are the best, in my opinion.
I'd have to think it's possible to make ultra-hard drugs and heads for continuous miners for exactly the purpose you mention: cutting through harder rocks than coal.
And if a continuous miner can work in a gold mine, I'd have to wonder about the potential of longwall systems in there. But maybe the CM is only used in specialized areas and a huge longwall face wouldn't work on hard rock.

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