ASTM D409/D409M-11a

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Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method

1.1 This test method covers the determination of the relative grindability or ease of pulverization of coals in comparison with coals chosen as standards. A prepared and sized sample receives a definite amount of grinding energy in a minia

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Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method

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ASTM D409/D409M-11a

Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method

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