Progress Report on Investigation of Detachable Rock-drill Bits McHenry Mosier Published: 1936 Total Pages: 16 Get eBook
Progress Report No. 3 on Investigation of Detachable Rock-drill Bits McHenry Mosier Published: 1937 Total Pages: 34 Get eBook
Progress Report No. 2 on Investigation of Detachable Rock-drill Bits McHenry Mosier Published: 1936 Total Pages: 30 Get eBook
Progress Report 4 on Investigation of Detachable Rock-drill Bits McHenry Mosier Published: 1937 Total Pages: 80 Get eBook
Report of Work of the Mining Division, U.S. Bureau of Mines for Calendar Year 1936, and Program for 1937 Charles F. Jackson Published: 1937 Total Pages: 20 Get eBook
Mineral Technology and Output Per Man Studies National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.) Published: 1937 Total Pages: 916 Get eBook