|
I 28.27:7503
|
Safeguarding underground workmen from noxious gases resulting from blasting in strip mines |
1 |
|
I 28.27:7504
|
Coproducts of coke in the United States, 1919-1947 |
1 |
|
I 28.27:7505
|
Report of Petroleum and Natural-gas Division : fiscal year 1945 |
1 |
|
I 28.27:7506
|
Report of Petroleum and Natural-gas Division : fiscal year 1946 |
1 |
|
I 28.27:7507
|
Mining methods and costs at the Kearney Zinc-Lead Mine, Central Mining District Grant County, N. Mex |
1 |
|
I 28.27:7508
|
Formation sampling with large-diameter drill holes at Fort Randall Dam site, South Dakota |
1 |
|
I 28.27:7509
|
Slope sinking through water-bearing strata at mine 3, Bell & Zoller Coal & Mining Co., Williamson County, Ill |
1 |
|
I 28.27:7510
|
Accident experience iron-ore mines, Lake Superior district, 1940-47 |
1 |
|
I 28.27:7511
|
Mining methods and practices at International Minerals & Chemical Corp. Potash Mine, Eddy County, N. Mex |
1 |
|
I 28.27:7512
|
A reconnaissance of lode mines and prospects in the Bohemia mining district, Lane and Douglas counties, Oreg |
1 |
|
I 28.27:7513
|
Supplemental list of respiratory protective devices approved by the Bureau of Mines : additions to list published in Information Circular 7444 |
1 |
|
I 28.27:7514
|
Methods and costs of mining fluorspar from a flat-bedded deposit at Cave-In-Rock, Ill |
1 |
|
I 28.27:7515
|
Two devices to prevent electric arcs with airdox operations in coal mines |
1 |
|
I 28.27:7516
|
Bibliography of investment and operating costs for chemical and petroleum plants |
1 |
|
I 28.27:7517
|
Quarrying methods and practices, U.S. Lime Products Corp., Clark County, Nev |
1 |
|
I 28.27:7518
|
Annual report of research and technologic work on coal : fiscal year 1948 |
1 |
|
I 28.27:7519
|
Questions and answers on propane and butane fuels |
1 |
|
I 28.27:7520
|
Small portable coal-dust explosion gallery |
1 |
|
I 28.27:7521
|
Selected list of references on minerals and related subjects |
1 |
|
I 28.27:7522
|
Operations and safety at the Retsof Rock Salt Mine |
1 |