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Proposed arrangement of a 16 & 26½ x 27½ STK Tandem Compound Paxman-Lenitz Engine Driving fan shaft. Scale ¼" = 1 foot. Penallta Colliery. Davey, Paxman & Co. Ld. Reference 76285 Tracing No. 22626. Date 4.2.11. Engineers, Colchester.
