Call Number (LC) Title Results
I 28.27:6594 Sampling and exploration by means of hammer drills 1
I 28.27:6597 Public services for the identification of mineral specimens 1
I 28.27:6598 A mechanically driven level rock tunnel 1
I 28.27:6599 Quarrying methods and costs at the Sloan quarry of the United States Lime Products Corporation, Sloan, Nev 1
I 28.27:6600 Milling methods and costs at the lead concentrator of the Hecla Mining Co., Gem, Idaho 1
I 28.27:6601 Mining methods and costs at the Mt. Hope mine of the Warren Foundry and Pipe Corporation, Mt. Hope, N.J. 1
I 28.27:6602 Shaft-sinking methods, practices, and costs of the Consolidation Coal Co. at its no. 261 mine, Caretta, McDowell County, W. Va 1
I 28.27:6603 Method and cost of quarrying limestone at the Milltown quarry of the Louisville Cement Co., Milltown, Ind 1
I 28.27:6604 Methods and costs of concentrating scheelite ore at the Silver Dike Mill, Mineral County, Nevada 1
I 28.27:6605 Milling methods and costs at the Pecos Concentrator of the American Metal Co., Tererro, N. Mex 1
I 28.27:6606 Geophysical abstracts, no. 1-127 1
I 28.27:6607 Mining, treatment methods and costs at the plant of the Colsolidated Rock Products Co., Durbin, Calif 1
I 28.27:6608 Methods and costs of quarrying, crushing, and grinding limestone at the plant of Southwestern Portland Cement Co., El Paso, Tex 1
I 28.27:6611 Small-scale placer-mining methods 1
I 28.27:6612 Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif 1
I 28.27:6613 Factors governing the selection of the proper level interval in underground mines 1
I 28.27:6616 Mica-mining methods, costs, and recoveries at no. 10 and no. 21 mines of the Spruce Pine Mica Co., Spruce Pine, N.C. 1
I 28.27:6619 Milling methods and costs at the concentrator of the Britannia Mining & Smelting Co., Ltd., Britannia Beach, B.C. 1
I 28.27:6620 Geophysical abstracts, no. 1-127 1
I 28.27:6621 Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill 1