I 28.27:6348
|
Method and cost of mining hematite at the Eureka-Asteroid mine on the Gogebic range, Gogebic county, Mich. / |
1 |
I 28.27:6349
|
Industrial safety training at a mining school / |
1 |
I 28.27:6350
|
Undercut block-caving method of mining in western copper mines / |
1 |
I 28.27:6351
|
Safety at the Morenci Branch of the Phelps Dodge Corporation, Morenci, Ariz. / |
1 |
I 28.27:6351-6400
|
Explosions in Alabama coal mines / |
1 |
I 28.27:6352
|
Explosions in Alabama coal mines / |
1 |
I 28.27:6353
|
Milling practice at the White Bird concentrator, Canam Metals Corporation, Picher, Okla. / |
1 |
I 28.27:6354
|
Fatalities in Alabama coal mines / |
1 |
I 28.27:6355
|
Geophysical abstracts no. XVI / |
1 |
I 28.27:6356
|
Method and cost of quarrying limestone at the Speed quarry of the Louisville Cement Co., Speed, Indiana / |
1 |
I 28.27:6357
|
Methods and costs of treatment at the Calumet & Hecla reclamation plant / |
1 |
I 28.27:6358
|
Milling methods and costs at the Nacozari concentrator of the Phelps Dodge Corporation, Nacozari, Sonora, Mexico / |
1 |
I 28.27:6359
|
Milling methods and costs at the Black Hawk concentrator, Hanover, New Mexico / |
1 |
I 28.27:6360
|
Mining methods and costs at Tintic Standard mine, Tintic District, Utah. |
1 |
I 28.27:6361
|
Mining and engineering methods and costs of the Hanover Bessemer Iron & Copper Co., Fierro, N. Mexico / |
1 |
I 28.27:6362
|
List of permissible self-contained oxygen breathing apparatus, gas masks, and hose masks / |
1 |
I 28.27:6363
|
Mining laws of Italy / |
1 |
I 28.27:6364
|
Milling method and cost at the conglomerate mill of the Calumet & Hecla Consolidated Copper Co. |
1 |
I 28.27:6365
|
Titanium / |
1 |
I 28.27:6366
|
Geophysical abstracts no. XVII / |
1 |