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A platform for research: civil engineering, architecture and urbanism
Dowty props
Material of construction, range of sizes and construction of Dowty hydraulic props, most suitable for range of seams between 3 and 6 ft thick; use of Dowty yielding props for support of weak roof, in power loading projects as roadhead supports, with conveyor driveheads, in seams of variable thickness, for straightening steel bars, and for waste edge support; performance and maintenance of props.
Dowty props
Material of construction, range of sizes and construction of Dowty hydraulic props, most suitable for range of seams between 3 and 6 ft thick; use of Dowty yielding props for support of weak roof, in power loading projects as roadhead supports, with conveyor driveheads, in seams of variable thickness, for straightening steel bars, and for waste edge support; performance and maintenance of props.
Dowty props
Great Britain Nat Coal Board -- Information Bul
1952
10 pages
Supp plate
Report
English
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