EBD C22.11-6591
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Cost of developing to operating stage and equipping small or medium-sized mine in Tri-State lead and zinc district |
1 |
EBD C22.11-6592
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Methods and costs of mining and preparing gravel and sand for market at plant of Seaboard Sand and Gravel Corporation, Port Jefferson, N.Y |
1 |
EBD C22.11-6594
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Sampling and exploration by means of hammer drills |
1 |
EBD C22.11-6595
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Data in reference to installation of cables in shafts and boreholes |
1 |
EBD C22.11-6596
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Rock-dust does stop or limit mine explosions |
1 |
EBD C22.11-6597
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Public services for identification of mineral specimens |
1 |
EBD C22.11-6598
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Mechanically driven level rock tunnel |
1 |
EBD C22.11-6599
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Quarrying methods and costs at Sloan quarry of U.S. Lime Products Corporation, Sloan, Nev |
1 |
EBD C22.11-6600
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Milling methods and costs at lead concentrator of Hecla Mining Co., Gem, Idaho |
1 |
EBD C22.11-6601
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Mining methods and costs at Mt. Hope mine of Warren Foundry and Pipe Corporation, Mt. Hope, N.J |
1 |
EBD C22.11-6602
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Shaft-sinking methods, practices, and costs of Consolidation Coal Co. at its No. 261 mine, Caretta, McDowell County, W.Va |
1 |
EBD C22.11-6603
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Method and cost of quarrying limestone at Milltown quarry of Louisville Cement Co., Milltown, Ind |
1 |
EBD C22.11-6604
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Methods and costs of concentrating Scheelite ore at Silver Dike mill, Mineral County, Nev |
1 |
EBD C22.11-6605
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Milling methods and costs at Pecos concentrator of American Metal Co., Tererro, N.Mex |
1 |
EBD C22.11-6609
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Quarrying and crushing methods and costs at Santa Catalina Island quarry of Graham Bros. (Inc.), Santa Catalina Island, Calif |
1 |
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
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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 |