|
I 28.23:4909
|
Guymard lead-zinc deposit, Orange County, N.Y. |
1 |
|
I 28.23:4910
|
Preparation characteristics of coal from Pike County, Ky |
1 |
|
I 28.23:4911
|
Diamond drilling for zinc ore at Andover-Sulphur Hill iron mines, Sussex County, N.J. |
1 |
|
I 28.23:4912
|
Soda sinter process for treating low-grade titaniferous ores |
1 |
|
I 28.23:4913
|
Petroleum-engineering study of the Quapaw pool, Osage County, Okla |
1 |
|
I 28.23:4914
|
Investigation of the combination silver-tungsten mine, Granite County, Mont |
1 |
|
I 28.23:4915
|
High-temperature experiments with zirconium and zirconium compounds |
1 |
|
I 28.23:4916
|
Crystal Mountain fluorite deposits, Ravalli County, Mont |
1 |
|
I 28.23:4917
|
Petroleum-engineering study of Healdton Oil Field, Carter County, Okla |
1 |
|
I 28.23:4918
|
Taconite fragmentation |
1 |
|
I 28.23:4919
|
Concentration of bastnaesite and other cerium ores |
1 |
|
I 28.23:4920
|
Preparation characteristics of coal from Floyd County, Ky |
1 |
|
I 28.23:4921
|
Maple Mountain-Hovey Mountain manganese project, Central District, Aroostook County, Maine |
1 |
|
I 28.23:4922
|
Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va |
1 |
|
I 28.23:4924
|
Estimate of known recoverable reserves of coking coal in McDowell County, W. Va |
1 |
|
I 28.23:4925
|
Longhole retreat mining of a steeply pitching anthracite bed : anthracite mechanical-mining investigations : progress report 7 |
1 |
|
I 28.23:4926
|
A selected bibliography of coal gasification |
1 |
|
I 28.23:4927
|
Concentration tests on various base-metal ores |
1 |
|
I 28.23:4928
|
Progress report on pegmatite investigations in South Dakota for fiscal year ended June 30, 1951 |
1 |
|
I 28.23:4929
|
Refractory properties of Pacific Northwest chromites |
1 |