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hardness of rock in mining

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hardness of rock in mining

Hardness Type L hammer Field Estimate of Strength Examples R5 Extremely Strong 250 10 50 60 Rock material only chipped under repeated hammer blows fresh basalt chert diabase gneiss granite quatzite R4 Very Strong... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.


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