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121
An electromagnetic system for detecting and locating trapped miners /
Published 1976Connect to online resource
Government Document Book -
122
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123
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124
Stereographic method of determining whether planes of weakness transect pillars /
Published 1977Government Document Book -
125
Production of blister copper by electric furnace smelting of dead-burned copper sulfide concentrates /
Published 1976Government Document Book -
126
Methods and costs of mining ferberite ore at the Cold Springs Mine, Nederland, Boulder County, Colo. /
Published 1932Search for the full-text version of this title in HathiTrust
Government Document Book -
127
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128
An electrolytic method of preventing corrosion of iron and steel /
Published 1913Search for the full-text version of this title in HathiTrust
Government Document Book -
129
Deterioration and spontaneous heating of coal in storage. : A preliminary report /
Published 1912Search for the full-text version of this title in HathiTrust
Government Document Book -
130
The effect of stemming on the efficiency of explosives /
Published 1912Search for the full-text version of this title in HathiTrust
Government Document Book -
131
Methods for the determination of water in petroleum and its products /
Published 1912Search for the full-text version of this title in HathiTrust
Government Document Book -
132
Methods of determining the sulphur content of fuels especially petroleum products /
Published 1912Government Document Book -
133
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134
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135
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136
The cementing process of excluding water from oil wells as practiced in California /
Published 1913Government Document Book -
137
Sanitation at mining villages in the Birmingham district, Ala. /
Published 1913Government Document Book -
138
Experiments with furnaces for a hand-fired return tubular boiler /
Published 1914Government Document Book -
139
Weathering of the Pittsburgh coal bed at the experimental mine near Bruceton, Pa. /
Published 1914Government Document Book -
140