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121
Design practices for multiple-seam room-and-pillar mines
“…United States. Bureau of Mines…”
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Government Document Online Book -
122
Updated Analysis of Longwall Pillar Stability (ALPS) computer program incorporates new Coal Mine Roof Rating (CMRR)
“…United States. Bureau of Mines…”
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Government Document Online Book -
123
Dust collector discharge shroud reduces dust exposure to drill operators at surface coal mines
“…United States. Bureau of Mines…”
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Government Document Online Book -
124
Improving the performance of longwall gob gas ventholes
“…United States. Bureau of Mines…”
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Government Document Online Book -
125
Navigation and control of continuous mining systems for coal mining
“…United States. Bureau of Mines…”
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Government Document Online Book -
126
Work of the Safety Division, fiscal year 1942.
“…United States. Bureau of Mines. Safety Division…”
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Government Document Online Book -
127
Coal reserves of eastern Kentucky /
“…United States. Bureau of Mines…”
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Government Document Online Book -
128
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129
Minerals yearbook /
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Government Document Online Serial -
130
Status of mineral resource information for the Yavapai Indian Reservation, Yavapai County, Arizona /
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Government Document Online Book -
131
Status of mineral resource information for the Blackfeet Indian Reservation, Montana /
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Government Document Online Book -
132
Status of mineral resource information for the Fort Yuma and Cocopah Indian Reservations, Arizona and California /
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Government Document Online Book -
133
Principles of the mineral resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey.
“…United States. Bureau of Mines…”
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Government Document Online Book -
134
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135
Principles of a resource/reserve classification for minerals /
“…United States. Bureau of Mines…”
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Government Document Online Book -
136
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137
Selenium and tellurium
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Government Document Online Serial -
138
Industrial sand and gravel
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Government Document Online Serial -
139
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140