A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Control of strata in mining: Investigations in Durham and Northumberland Coalveld
Forces induced when driving narrow excavations; conditions in boards and walls, nature of roof fractures, fracture control in boards, pressure relief, and prop loads; wide workings; transference of roof load; yield pillar technique. (See also - discussion p 94-5)
Control of strata in mining: Investigations in Durham and Northumberland Coalveld
Forces induced when driving narrow excavations; conditions in boards and walls, nature of roof fractures, fracture control in boards, pressure relief, and prop loads; wide workings; transference of roof load; yield pillar technique. (See also - discussion p 94-5)
Control of strata in mining: Investigations in Durham and Northumberland Coalveld
Instn Min Engrs -- Trans
1953
12 pages
Article (Journal)
English
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Northumberland and Durham Coalfield, Durham area, Hutton Seam
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