DRILLING BLASTHOLES AT THE HOLDEN MINE WITH PERCUSSION DRILLS AND TUNGSTEN CARBIDE BITS

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作者：
YOUNGBERG, EA
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来源：
TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS | 1949年 / 184卷 / 03期
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TU [建筑科学];
学科分类号：
0813 ;
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页码：75 / 78
页数：4
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