|
I 28.27:6239
|
Mining methods and costs, American Zinc Co. of Tennessee, Mascot, Tenn |
1 |
|
I 28.27:6240
|
Mining practice at Harmony Mines Co., Baker, Idaho |
1 |
|
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 |
|
I 28.27:6265
|
Mining laws of Esthonia |
1 |
|
I 28.27:6266
|
Mining laws of French Morocco |
1 |
|
I 28.27:6268
|
The granite industry--dimension stone |
1 |
|
I 28.27:6270
|
Mining laws of the Belgian Congo |
1 |
|
I 28.27:6273
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6274
|
Selected bibliography and map of manganese deposits of the United States by districts |
1 |
|
I 28.27:6276
|
Mining methods and costs at the Black Butte quicksilver mine, Lane County, Oregon |
1 |
|
I 28.27:6280
|
Methods and costs of concentrating tungsten ore at the Nevada-Massachusetts Mill, Mill City, Nevada |
1 |
|
I 28.27:6284
|
Method and cost of mining tungsten ore at the Nevada-Massachusetts Co. mines, at Mill City, Nevada |
1 |
|
I 28.27:6285
|
Milling methods and costs at the Harmony mines, Baker, Idaho |
1 |
|
I 28.27:6286
|
Methods and costs of mining at Hartley-Grantham mine, Tri-State zinc and lead district |
1 |