EBD C22.11-6611
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Small-scale placer-mining methods |
1 |
EBD C22.11-6612
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Gold mining and milling methods and costs at Vallecito Western drift mine, Angels Camp, Calif |
1 |
EBD C22.11-6613
|
Factors governing selection of proper level interval in underground mines |
1 |
EBD C22.11-6614
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Ventilation study of Graceton Coal & Coke Co. mine, Graceton, Pa |
1 |
EBD C22.11-6615
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Methods and costs of mining and crushing gypsum at mine of Blue Diamond Corporation (Ltd.), Arden, Nev |
1 |
EBD C22.11-6616
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Mica-mining methods, costs, and recoveries at No. 10 and No. 21 mines of Spruce Pine Mica Co., Spruce Pine, N.C |
1 |
EBD C22.11-6617
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Falls of roof and coal in Washington mines |
1 |
EBD C22.11-6618
|
Accident experience and cost in Pennsylvania anthracite and bituminous mines, 1926-1930 |
1 |
EBD C22.11-6619
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Milling methods and costs at concentrator of Britannia Mining and Smelting Co., Ltd., Britannia Beach, B.C |
1 |
EBD C22.11-6621
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Milling methods and costs at Hillside Fluorspar Mines, Rosiclare, Ill |
1 |
EBD C22.11-6622
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Employee-timekeeping system and mechanical pay-roll methods at Britannia Mining and Smelting Co. (Ltd.), Britannia Beach, B.C |
1 |
EBD C22.11-6623
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Procedure of purchasing and supply departments of Miami Copper Co., Miami, Ariz |
1 |
EBD C22.11-6624
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Magnetic concentration methods and costs of Witherbee, Sherman & Co., Mineville, N.Y |
1 |
EBD C22.11-6625
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Bonuses to encourage safe work and for work safely done |
1 |
EBD C22.11-6626
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Method and cost of dredging sand and gravel, Portland Gravel Co., Portland, Oreg |
1 |
EBD C22.11-6627
|
Iron oxide pigments and mortar colors |
1 |
EBD C22.11-6629
|
Mining laws of Poland |
1 |
EBD C22.11-6630
|
Mining laws of Republic of Liberia |
1 |
EBD C22.11-6631
|
Mining laws of Denmark and Danish possessions |
1 |
EBD C22.11-6632
|
Mining laws of Haiti |
1 |