Preventive maintenance
| Uploaded by | The Library of Virginia |
|---|---|
| License | No known copyright restrictions |
| Comments | 0 |
| Favorites | 0 |
| Views | 4,554 |
| Date taken | 2011-08-18 11:23:45 |
| Date uploaded | 2011-08-22 |
| Tags | libraryofvirginia, hopewellva, unitedmineworkersofamerica, chemical, industry, industrial, factory, chart |
| Visibility | public |