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《Hebei Coal》 2000-04
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Technical study on bolt & shot concrete by using scrap stone instead of sand

CHEN Jin - tang, ZHANG Jing - cai (Pingdingshan Geology & Mineral Resouses Bureau, Pingdinashan 467000; No. 2 Mine of the Hebi Mining Adminidtrstion, Hebi 458020, China)  
In the river - sand - shortage region, river - sand is natural to be replaced by scrap stone, which is technically practical and economically remarkable.
【CateGory Index】: TD35
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