Points out the advantages of air-powered hand tools over electric tools. Some of the tools and equipment discussed are relevant to conservation work, such as compressors, dental handpieces, and various hand tools. Also gives basic information about how the tools work. Charts listing the characteristics of various tools are included. There is a list of 27 American manafacturers of portable air tools and a list of 18 American manufacturers of air compressors. -- AATA