Data on metal-mine ventilation in 1929.
| Other Authors: | |
|---|---|
| Format: | Government Document eBook |
| Language: | English |
| Published: |
Washington, D.C. :
[publisher not identified],
1930.
|
| Series: | Mines Bur. Info. Circ. No. 6246
|
| Subjects: | |
| Online Access: | Connect to the full text of this electronic document |
| Item Description: | [On mine ventilation for safety purposes] Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from ProQuest, LLC. Electronic resource. |
|---|---|
| Physical Description: | 1 online resource (22 pages) |
| Format: | System requirements: PDF reader software. |