Physical description

Four page document . Australian Compressed Air Institute Quarterly Newsletter dated September 1971. Items mentioned are: Early Pneumatics, Pumping by Air Lift. There is also a table of efficient practice and average practice for air-lift pumps. Also an Air Pipeline Layout in Small Factories and two tables for volumes of air. Also a diagram for air pipeline layout. Also a smaller piece of paper with the Australian Compressed Air Institute Members at September 1971.