Search U.S. government technical reports digitized or harvested by TRAIL.
Design of bulkheads for controlling water in underground mines
The Effects of a retreating longwall on a three-entry gate road system
Strata interactions in multiple-seam mining--two case studies in Pennsylvania
Pillar load transfer associated with multiple-seam mining
Comparative study of pillar load transfer associated with multiple-seam mining
Loading characteristics of pillars in multiple-seam mining operations
Effects of abandoned multiple seam workings on a longwall in Virginia