Successful System for Signaling from Mine Cages at Rest Or in Motion Carl Belser Published: 1944 Total Pages: 40 Get eBook
Technical Paper - Bureau of Mines United States. Bureau of Mines Published: 1946 Total Pages: 964 Get eBook
Bibliography of Bureau of Mines Publications Dealing with Health and Safety in the Mineral and Allied Industries United States. Bureau of Mines Published: 1946 Total Pages: 202 Get eBook