|
I 28.27:6457
|
Hafnium |
1 |
|
I 28.27:6459
|
Emeralds |
1 |
|
I 28.27:6460
|
Concentrating methods and costs at the Morenci Concentrator of the Phelps Dodge Corporation, Morenci, Greenlee County, Ariz |
1 |
|
I 28.27:6462
|
Methods and costs of mining quicksilver ore at the New Idria Mine, San Benito County, Calif |
1 |
|
I 28.27:6464
|
Mining methods and costs of mining copper ore at the Verde Central Mines, Inc., Jerome, Ariz |
1 |
|
I 28.27:6465
|
Zircon (the gem) |
1 |
|
I 28.27:6466
|
Bismuth |
1 |
|
I 28.27:6467
|
Milling methods and costs at the Concentrator of the Old Dominion Co., Globe, Ariz |
1 |
|
I 28.27:6468
|
Iceland spar and optical fluorite |
1 |
|
I 28.27:6470
|
Mining methods and costs at the Porcupine United Gold Mines' Rochester Mine at Timmins, Ontario |
1 |
|
I 28.27:6471
|
Rubies and sapphires |
1 |
|
I 28.27:6472
|
Quartz and silica. Part I, General summary |
1 |
|
I 28.27:6473
|
Quartz and silica. II, Quartz, quartzite, and sandstone |
1 |
|
I 28.27:6474
|
Quartz and silica. III, Sand and miscellaneous silicas |
1 |
|
I 28.27:6475
|
Rhenium (and masurium) |
1 |
|
I 28.27:6478
|
Geophysical abstracts, no. 1-127 |
1 |
|
I 28.27:6479
|
Milling methods and costs at the Arthur and Magna concentrators of the Utah Copper Co |
1 |
|
I 28.27:6482
|
Chalk, whiting, and whiting substitutes |
1 |
|
I 28.27:6488
|
Methods and costs of milling feldspar at the Minpro Plant, Tennessee Mineral Products Corporation, Spruce Pine, N.C. |
1 |
|
I 28.27:6489
|
Milling methods and costs at the Verde Central concentrator, Jerome, Ariz |
1 |