|
I 28.27:6667
|
Radium in medical use in the United States |
1 |
|
I 28.27:6668
|
Prospecting and exploration for sand and gravel |
1 |
|
I 28.27:6673
|
Methods and costs of mining ferberite ore at Cold Springs Mine, Nederland, Boulder County, Colo |
1 |
|
I 28.27:6676
|
Method and cost of mining sand and gravel at the Farmington (Conn.) plant of the Atlas Sand, Gravel & Stone Co |
1 |
|
I 28.27:6679
|
Supplementary notes on core drilling in the salt beds of western Texas and New Mexico : tests 13 to 24 |
1 |
|
I 28.27:6681
|
Method and cost of exploring, equipping for development, and developing the Central Patricia Group of Claims, Northern Ontario |
1 |
|
I 28.27:6682
|
The present status of the mineral industry |
1 |
|
I 28.27:6683
|
Mining laws of Iraq |
1 |
|
I 28.27:6684
|
Mining laws of Switzerland |
1 |
|
I 28.27:6685
|
Methods and costs of milling ferberite ore at the Wolf Tongue Concentrator, Nederland, Boulder County, Colo |
1 |
|
I 28.27:6689
|
Development of sand and gravel deposits |
1 |
|
I 28.27:6691
|
Square-set system of mining |
1 |
|
I 28.27:6696
|
Dredging methods and costs of Ross Island Sand & Gravel Co., Portland, Ore |
1 |
|
I 28.27:6706
|
Milling methods and costs at the San Guillermo concentrator of the Companiá Industrial "El Potosi," S.A., San Guillermo, Chihuahua, Mexico |
1 |
|
I 28.27:6751R
|
Onyx marble and travertine |
1 |
|
I 28.27:6768
|
Manganese : its occurrence, milling, and metallurgy : part I |
1 |
|
I 28.27:6769
|
Manganese : its occurrence, milling, and metallurgy : part II |
1 |
|
I 28.27:6770
|
Manganese : its occurrence, milling, and metallurgy : part III |
1 |
|
I 28.27:6771
|
Manganese : its occurrence, milling, and metallurgy : part IV |
1 |
|
I 28.27:6772
|
Manganese : its occurrence, milling, and metallurgy : part V |
1 |