Show RECENT publications colorado school of mines magazine for march 1914 golden colorado principal article by S P warren on hilltop milling practice describing the mill of the hilltop mining reduction co at hilltop twenty miles southwest of battle mountain nevada biennial report of the state geologist of missouri bulletin 2 of the illinois miners and mechanics institutes containing outline of proposed methods for providing technical assistance to miners and mechanics published by the university of illinois urbana ill III united states bureau of mines third annual report of the director of the bureau of mines 1912 13 J A holmes director 1913 pp ap I 1 pl pi bulletin 42 the sampling and examination of mine gases and natural gas by G A burrell and F M seibert 1913 pp ap 2 pis 23 figs bulletin 68 electric switches for use in gaseous mines by H H dark clark and R W crocker 1913 38 PP 6 pis 1 fig technical paper 57 A preliminary report on the utilization of petroleum and natural gas in wyoming by W R calvert 1913 23 pp ap technical paper 69 production of explosives in the united states during the calendar year 1912 compiled by A H fay 1914 8 pp ap technical paper 71 permissible explosives tested prior to january 1 1914 by clarence hall 1914 12 pp ap |