Call Number (LC) Title Results
I 28.27:6615 Methods and costs of mining and crushing gypsum at the mine of the Blue Diamond Corporation, Ltd., Arden, Nev. / 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 28.27:6617 Falls of roof and coal in Washington mines / 1
I 28.27:6618 Accident experience and cost in Pennsylvania anthracite and bituminous mines : 1926-30 / 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. 36 / 1
I 28.27:6621 Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill. / 1
I 28.27:6622 Employee-timekeeping system and mechanical pay-roll methods at Britannia Mining & Smelting Co. (Ltd.), Britannia Beach, B.C. / 1
I 28.27:6623 Procedure of the purchasing and supply departments of the Miami Copper Co., Miami, Ariz. / 1
I 28.27:6624 Magnetic concentration methods and costs of Witherbee, Sherman & Co., Mineville, N.Y. / 1
I 28.27:6625 Bonuses to encourage safe work and for work safely done / 1
I 28.27:6626 Method and cost of dredging sand and gravel, Portland Gravel Co., Portland, Oreg. / 1
I 28.27:6626-6650 Survey of cracking plants, January 1, 1932 / 1
I 28.27:6627 Iron oxide pigments and mortar colors / 1
I 28.27:6628 Geophysical abstracts : no. 37 / 1
I 28.27:6629 Mining laws of Poland / 1
I 28.27:6630 Mining laws of the Republic of Liberia / 1
I 28.27:6631 Mining laws of Denmark and Danish possessions / 1
I 28.27:6632 Mining laws of Haiti / 1
I 28.27:6633 Mining laws of the Unfederated Malay States / 1