 BULLETIN 48. The selection of explosives used in engineering and mining operations, by Clarence Hall and SP Howell.  Bulletin - Stran 1371914Celotni ogled - O knjigi
 | 1913 - 690 strani
...States. — Recent publications include the following (see vol. xxxv, p. 330) : BULLETINS. — No. 48. Selection of explosives used in engineering and mining operations ; by CLARENCE HALL and SP HOWELL. Pp. 50 ; 3 pie., 7 figs. No. 52. Ignition of mine gases by the filaments of incandescent electric lamps... | |
 | 1913 - 1420 strani
...States. — Recent publications include the following (see vol. xxxv, p. 330) : BULLETINS. — No. 48. Selection of explosives used in engineering and mining operations ; by CLARENCE HALL and SP Ho WELL. Pp. 50 ; 3 pis., 7 tigs. No. 52. Ignition of mine gases by the filaments of incandescent electric... | |
 | Lake Superior Mining Institute - 1914 - 382 strani
...practically the same. The above investigations are described in detail in Bulletin 48, Bureau of Mines, "The Selection of Explosives Used in Engineering and Mining Operations" by Clarence Hall and Spencer P. Howell. The following statement regarding the work is of interest: "The mine tests, although... | |
 | United States. Bureau of Mines - 1918 - 118 strani
...pis., 5 figa. BULLETIN 46. An investigation of explosion-proof mine motors, by HH Clark. 1912. 44pp., 6 pis., 14 figs. BULLETIN 48. The selection of explosives...mining operations, by Clarence Hall and SP Howell. 1914. 50 pp., 3 pis., 7 figs. BULLETIN 50. A laboratory stuJy of the inflammability of coal dust, by... | |
 | United States. Bureau of Mines - 58 strani
...Director, Bureau of Mines, for a copy of the latest list. PUBLICATIONS AVAILABLE FOB FREE DISTRIBUTION. BULLETIN 48. The selection of explosives used in engineering...mining operations, by Clarence Hall and SP Howell. 1914. 50 pp., 3 pis., 7 figs. BULLETIN 57. Safety and efficiency in mine tunneling, by DW Brunton and... | |
 | 1911 - 968 strani
...Scholz. 204 pp.. 14 pis., 28 figs. Reprint of United States Geological Survey Bulletin 425. BULLETIN 46. An investigation of explosion-proof mine motors, by HH Clark. 1912. 44 pp., 6 |ils., 14 figs. BULLETIN 48. The selection of explosives used in engineering and mining operations,... | |
 | United States. Bureau of Mines - 1911 - 1310 strani
...Northern Anthracite Coal Basin of Pennsylvania, by NH Darton. 1913. 33 pp., 8 pis., 5 figs. BULLETIN 46. An investigation of explosion-proof mine motors, by HH Clark. 1912. 44 pp., « pis., 14 figs. BULLETIN 48. The selection of explosives used in engineering and mining operations,... | |
 | 1912 - 774 strani
......do. . do Do ...do ...do... Bulb completely smashed . . . do Do... ..do... Do ...do do BULLETIN 46. An investigation of explosion-proof mine motors, by HH Clark. 1912. 44 pp., 6 pis. BULLETIN 48. The selection of explosives used in engineering and mining operations, by Clarence Hall... | |
 | 1912 - 860 strani
...Northern Anthracite Basin of Pennsylvania, by NH Darton. 1913. 33 pp., 8 pis., 5 figs. BULLETIN 46. An investigation of explosion-proof mine motors, by HH Clark. 1912. 44 pp., 6 pk., 14 figs. BULLETIN 47. Notes on mineral wastes, by CL Parsons. 1912. 44 pp. BULLETIN 48. The selection... | |
 | 1913 - 948 strani
...Northern Anthracite Coal Basin of Pennsylvania, by NH Darton. 1913. 33 pp. 8 pis., 5 figs. BULLETIN 46. An investigation of explosion-proof mine motors, by...operations, by Clarence Hall and SP Howell. 1913. 50pp., 3 pis., Tfiga. BULLETIN 50. A laboratory study of the inflammability of coal dust, by JCW Frazer,... | |
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