EBD C22.11-6068
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Development and safety of storage-battery locomotive |
1 |
EBD C22.11-6069
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Mining of gilsonite in Utah |
1 |
EBD C22.11-6070
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Hazards in connection with concentrated coal mining |
1 |
EBD C22.11-6071
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Exports of mineral oils from Gulf Coast ports in 1927 |
1 |
EBD C22.11-6072
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Russian papers on measurements of terrestrial radioactivity; with supplementary chapter on radioactivesubstances and methods for locating them |
1 |
EBD C22.11-6073
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Fires and fire prevention in Lake Superior mines |
1 |
EBD C22.11-6075
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Recent developments in production of motor fuels from coal |
1 |
EBD C22.11-6076
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How fires start in mines |
1 |
EBD C22.11-6081
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Recovery of fine gold by amalgamation |
1 |
EBD C22.11-6083
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Are flame safety lamps suitable for detecting petroleum vapors? |
1 |
EBD C22.11-6086
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Why, when, and how to make ventilation surveys of metal mines |
1 |
EBD C22.11-6087
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Rock-dusting by hand method |
1 |
EBD C22.11-6088
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Third annual West Virginia State Safety Day Meet, Bluefield, W.Va., Sept. 22, 1928 |
1 |
EBD C22.11-6090
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How U.S. Bureau of Mines conducts its national or international first-aid contests |
1 |
EBD C22.11-6092
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Method and cost of mining magnetite in Mineville district, N.Y |
1 |
EBD C22.11-6093
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Factors affecting falls of roof and coal |
1 |
EBD C22.11-6094
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Classification of North American coals |
1 |
EBD C22.11-6095
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Work of Holmes Safety Association at Baton Rouge, La |
1 |
EBD C22.11-6096
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State regulations governing explosion proof type electric motors in coal mines |
1 |
EBD C22.11-6098
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Electrical safety inspection suggestions for mine-safety engineers. |
1 |