|
I 28.27:6794
|
Consumption and prices of nonmetallic minerals |
1 |
|
I 28.27:6797
|
The use of treated mine ties and timbers in Illinois and Indiana coal mines |
1 |
|
I 28.27:6799
|
Mining methods and costs at Herron and Laster Lease, Superior, Ariz |
1 |
|
I 28.27:6806
|
Mining methods and costs at the Cresson Mine, Cripple Creek, Colo |
1 |
|
I 28.27:6816
|
Waste filling of stopes |
1 |
|
I 28.27:6817
|
Asbestos : general information |
1 |
|
I 28.27:6821
|
Tungsten. Part 1 |
1 |
|
I 28.27:6822
|
Mica |
1 |
|
I 28.27:6823
|
Mining methods and costs at the mine of the St. Joseph Lead Co., Atlanta, Idaho |
1 |
|
I 28.27:6824
|
Mining and milling methods at the Big Jim Mine, Oatman, Ariz |
1 |
|
I 28.27:6825
|
Summary of drifting and crosscutting cost data |
1 |
|
I 28.27:6830
|
Minor mineral fertilizer materials |
1 |
|
I 28.27:6833
|
Sodium sulfate |
1 |
|
I 28.27:6839
|
Essentials in developing and financing a prospect into a mine |
1 |
|
I 28.27:6842
|
Gold and silver custom plants |
1 |
|
I 28.27:6843
|
Prospecting for lode gold and locating claims on the public domain |
1 |
|
I 28.27:6845
|
List of devices for respiratory protection approved by the U.S. Bureau of Mines |
1 |
|
I 28.27:6846
|
Placer-mining methods of E.T. Fisher Co., Atlantic City, Wyo |
1 |
|
I 28.27:6847
|
The rare earths |
1 |
|
I 28.27:6851
|
Mining methods and costs at the Eureka Standard mine |
1 |