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Stone Crushers Micro Abrasion

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stone crushers micro abrasion

At the base of this triangle in Fig 37 Plate 1 it will be noted that there are four porphyries Nos 24 29 31 32 from the National Physical Laboratory list which show a gradual increase of impact a remarkably uniform and high Dorry abrasion and crushingstrength with the exception of No 31 which gives somewhat lower values but an increasing attrition in the direction opposite to


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