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I 28.27:6232
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Mining methods and costs at the Hecla and Star mines, Burke, Idaho |
1 |
|
I 28.27:6233
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6234
|
Mining method and costs at the Utah Copper Co., Bingham Canyon, Utah |
1 |
|
I 28.27:6235
|
Comparative advantages of applying several geophysical methods of prospecting to the same territory |
1 |
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I 28.27:6236
|
Milling practice at the Alaska Juneau concentrator |
1 |
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I 28.27:6237
|
Mining methods at the Old Dominion Mine, Globe, Ariz |
1 |
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I 28.27:6238
|
Mining methods at the Morning mine of the Federal Mining and Smelting Company, Mullan, Idaho |
1 |
|
I 28.27:6239
|
Mining methods and costs, American Zinc Co. of Tennessee, Mascot, Tenn |
1 |
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I 28.27:6240
|
Mining practice at Harmony Mines Co., Baker, Idaho |
1 |
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I 28.27:6241
|
Concentrator methods and costs at the Hayden Plant of the Nevada Consolidated Copper Co., Arizona |
1 |
|
I 28.27:6247
|
Mining methods, practices, and costs of the Cananea Consolidated Copper Co., Sonora, Mexico |
1 |
|
I 28.27:6248
|
Methods and costs of stripping and mining at the United Verde Open-Pit Mine, Jerome, Arizona |
1 |
|
I 28.27:6250
|
Mining practice and methods at the United Verde Extension Mining Company, Jerome, Ariz |
1 |
|
I 28.27:6256
|
Phosphate rock. Part 1, General information |
1 |
|
I 28.27:6260
|
Mining methods and costs at the Engels Mine, Plumas County, Calif |
1 |
|
I 28.27:6261
|
Milling methods and costs at the concentrator of the Cananea Consolidated Copper Co., Cananea, Sonora, Mexico |
1 |
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I 28.27:6265
|
Mining laws of Esthonia |
1 |
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I 28.27:6266
|
Mining laws of French Morocco |
1 |
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I 28.27:6268
|
The granite industry--dimension stone |
1 |
|
I 28.27:6270
|
Mining laws of the Belgian Congo |
1 |