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54 (LIV) — 1943-1944
Lancashire Boiler Fittings, 83.
Latent Heat, 142.
Latent Heat of Fusion and Vaporisation, 139.
Latent Heat, Sensible Use, 12.
Leclanche Cell, 113.
Length of Coal Faces, 107.
Locomotive Haulage, 254.
Lofthouse Colliery Tub, 136.
Long Service Awards, 145.
Longwall Face, Use of Chocks on, 22.
Longwall Workings, Setting Out, 23.
Longwall Workings, Support of, 159.
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