Feb 24, 2022 · Washing and Screening Plant, Sand and Gravel, 75-Ton Per Hour, Pioneer Model 412-VW with Allis-Chalmers Power Unit: War Department: Oct. 1943: 1 v. (various pagings) 5-1106: Crushing and Screening Plant, 2 Units, Gasoline Engine Driven, Semi-Trailer Mounted. with Dollies, 25 Cu. Yd. Per Hour, Iowa, .Model No. 2 with Buda Engine Model L-525: War