Air and gas drilling manual

According to the U.S. Department of Energy, by 2005, 30% of all wells will be drilled using gas and air. The Air and Gas Drilling Manual, by William Lyons — an internationally known expert and holder of nine drilling patents — lays out everything you need to apply air and gas drilling to all kinds of operations, from the most basic to the most complex, and for the shallowest to the deepest.