| Author: | Ruff, T. M. | 
|---|---|
| Year: | 1995 | 
| Document Type: | N/A | 
| Series: | Report of investigations (United States. Bureau of Mines) | 
| Report Number: | Bureau of Mines Report of Investigations 9545 | 
| Subjects: | Loaders (Machines) -- Automatic control. | 
| Coal-mining machinery -- Automatic control. | |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc304114/ |