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97-133.pdf (130 pages, 4,427K)
TABLE OF CONTENTS
Contents Abstract A Statistical Overview of Retreat Mining of Coal Pillars in the United States |
97-133-a.pdf (20 pages, 391K) |
PILLAR DESIGN Analysis of Retreat Mining Pillar Stability (ARMPS) Preventing Massive Pillar Collapses in Coal Mines |
97-133-b.pdf (32 pages, 1,011K) |
Pillar Design
and Coal Strength A New Laminated Overburden Model for Coal Mine Design |
97-133-c.pdf (25 pages, 933K) |
MOBILE ROOF SUPPORTS Retreat Mining with Mobile Roof Supports |
97-133-d.pdf (15 pages, 606K) |
Monitoring Mobile Roof Supports | 97-133-e.pdf (10 pages, 306K) |
Full-Scale Performance Evaluation of Mobile Roof Supports | 97-133-f.pdf (28 pages, 953K) |