The U.S. presently is faced with a developing crisis in its energy resources and specifically in its supply of record key natural gas. The use of nuclear explosives in the stimulation of low-permeability gas reservoirs has the potential of supplying more than 300 trillion Cu ft of gas, and amount greater than the nation's presently proven gas reserves. Two nuclear-explosive gas-stimulation experiments have produced a substantial quantity of gas. An "economic projection is made of commercial production (after the successful completion of a research and development program) - for nuclear-explosive, stimulation of wells in the Piceance and Green River Basins in Colorado and Wyoming the internal rate of return on investment varies from 7-1/2 to 28 1/2% depending on the properties of the reservoirs and the required number of explosives per well, assuming a wellhead price for gas of 40 centers per thousand cu ft. A schedule is proposed for the commercial development of the rate of 3.4 trillion cu ft by the year 2000.