A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Barrier pillars in Lackawanna Basin, northern field, anthracite region of Pennsylvania
Barrier-pillar system in Lackawanna Basin consists of 93 barrier pillars between Archbald and Taylor, Pa; these pillars affect 48 mines, have total length of 87 mi, and confine 21 underground pools, which contain more than 10 billion gal of water; investigation indicates that damage to many of existent barrier pillars can be anticipated.
Barrier pillars in Lackawanna Basin, northern field, anthracite region of Pennsylvania
Barrier-pillar system in Lackawanna Basin consists of 93 barrier pillars between Archbald and Taylor, Pa; these pillars affect 48 mines, have total length of 87 mi, and confine 21 underground pools, which contain more than 10 billion gal of water; investigation indicates that damage to many of existent barrier pillars can be anticipated.
Barrier pillars in Lackawanna Basin, northern field, anthracite region of Pennsylvania
U S Bur Mines -- Bul
Ash, S.H. (author) / Davies, B.S. (author) / Jenkins, H.E. (author) / Romischer, W.M. (author)
1952
114 pages
4 Maps in pocket
Report
English
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