A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Methods of pillar recovery
Reports by Committee on Mechanical Loading, showing details of pillar extraction under different types of roof; Pillar recovery under medium strong roof, by J. A. YOUNKINS; Pillar recovery under very strong roof, by J. F. MAZZA.
Methods of pillar recovery
Reports by Committee on Mechanical Loading, showing details of pillar extraction under different types of roof; Pillar recovery under medium strong roof, by J. A. YOUNKINS; Pillar recovery under very strong roof, by J. F. MAZZA.
Methods of pillar recovery
Min Congress J
1947
3 pages
Article (Journal)
English
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