Technical manual TM (series). 5-1281-1. Asphalt plant, gasoline driven, 10 to 80 tons per hour, 2 unit, unit no. 1 mixer, bituminous Barber-Greene model 840-G, unit no. 2, dryer aggregate, Barber-Greene model 830-G trailer mounted, less engines, operating and maintenance instructions [with list of references; Aug. 1952].

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