Continuous mining machine cuts coal in both directions of travel eliminating downtime caused by retreating across face to start new cut.
Bidirectional Continuous Coal Miner
NASA Tech Briefs ; 8 , 1
1984-04-01
Miscellaneous
No indication
English
Miner for Cutting Entry Passages in Coal Seams
NTRS | 1984
|Engineering Index Backfile | 1964
Enhancing continous miner flexibility
Tema Archive | 1994
|