| Call Number (LC) | Title | Results |
|---|---|---|
| I 28.8:17C | Procedure for testing explosives for permissibility for use in coal mines, with test requirements, tolerance limits, and schedule of fees. | 2 |
| I28.8..17C | Procedure for testing explosives for permissibility for use in coal mines, with test requirements, tolerance limits, and schedule of fees. | 2 |
| I 28.8:18 |
Procedure for establishing list of permissible carbon monoxide indicators; fees, character of tests, and conditions under which indicators will be tested. Procedure for establishing list of permissible carbon monoxide indicators; fees, character of tests, and conditions under which indicators will be tested |
2 |
| I28.8-18 | Procedure for establishing list of permissible carbon monoxide indicators; fees, character of tests, and conditions under which indicators will be tested. | 1 |
| I 28.8:19A |
Procedure for testing supplied-air respirators for permissibility. Procedure for testing supplied-air respiratiors for permissibility. |
3 |
| I28.8..19A | Procedure for testing supplied-air respirators for permissibility. | 2 |
| I 28.8:22 |
Procedure for Testing Diesel Mine Locomotives for Permissability and Recommendations on the Use of Diesel Locomotives Underground; Approved Sept. 2, 1944. Procedure for testing Diesel mine locomotives for permissibility and recommendations on the use of Diesel locomotives underground. [Approved] September 2, 1944. |
2 |
| I28.8..22 | Procedure for Testing Diesel Mine Locomotives for Permissability and Recommendations on the Use of Diesel Locomotives Underground; Approved Sept. 2, 1944. | 1 |
| I 28.8:23 |
Procedure for Testing Nonemergency Gas Respirators (Chemical Cartridge Respirators) for Permissability; Approved Nov. 13, 1944. Procedure for testing nonemergency gas respirators (chemical cartridge respirators) for permissibility, approved November 13, 1944. |
2 |
| I28.8..23 | Procedure for Testing Nonemergency Gas Respirators (Chemical Cartridge Respirators) for Permissability; Approved Nov. 13, 1944. | 1 |
| I 28.8:(nos.) | Schedules of Bureau of Mines | 1 |
| I 28.80: | Bauxite and alumina in the. | 1 |
| I 28.80/2: | Bauxite and alumina in. | 1 |
| I 28.81:1/1 | Foreign minerals survey, Nov. 1943. | 1 |
| I28.81..1_1 | Foreign minerals survey, Nov. 1943. | 1 |
| I 28.81:1/6 | Foreign minerals survey, June 1944. | 1 |
| I28.81..1_6 | Foreign minerals survey, June 1944. | 1 |
| I 28.81:1/10 | Foreign minerals survey, Dec. 1944. | 1 |
| I28.81..1_10 | Foreign minerals survey, Dec. 1944. | 1 |
| I 28.81:2/6 | Foreign Mineral Survey, A Regional Reiew of Mineral Resources, Production and Trade, Mineral Resources of the Belgian Congo and Ruandra-Urundi. | 1 |
