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Safety in Pneumatic Drilling and Related Blasting Operations. Opencut Mine, Morenci Branch, Phelps Dodge Corp., Morenci, Ariz

Ernest R. RodriguezAllen D. Look

出版	U.S. Department of the Interior, Bureau of Mines, 1956
URL	http://books.google.com.hk/books?id=EzXcGDclslsC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN