Inspection and Testing of Mine-type Electrical Equipment for Permissibility Lee Clyde Ilsley Published: 1941 Total Pages: 38 Get eBook
Permissible Electrically Operated Hand-held Coal Drills L. C. Ilsley Published: 1937 Total Pages: 26 Get eBook
Bibliography of Bureau of Mines Investigations of Coal and Its Products, 1910-60 United States. Bureau of Mines. Division of Bituminous Coal Published: 1962 Total Pages: 172 Get eBook
