On the right side of the room are two large pieces of equipment. A group of coils are laying against one of the machines. Hoses are laying on the floor. Three wooden structures are in the background.
On the right side of the room are two large pieces of equipment. A group of coils are laying against one of the machines. Hoses are laying on the floor. Three wooden structures are in the background.
Nine men wearing safety helmets are sitting on two of three large barrels in front of the mine. On their left is a Western Railway car filled with coal. There is a coal cart at the mine entrance on the upper level.
Nine men wearing safety helmets are sitting on two of three large barrels in front of the mine. On their left is a Western Railway car filled with coal. There is a coal cart at the mine entrance on the upper level.
This illustration diagrams the destructive distillation of wastes by (Cline) Continuous-Feed Process, Agricultural By-Products Laboratory, Ames, Iowa, September 13, 1934
This illustration diagrams the destructive distillation of wastes by (Cline) Continuous-Feed Process, Agricultural By-Products Laboratory, Ames, Iowa, September 13, 1934
