“…Gard, 1963;Swiff, 1963 Plowshare; vertical shaft to horizontal Carlsbad, New Mexico Farmington, New Mexico 1211 0167 29 1292 (4240) Shale Plowshare; gas-recovery experiment in Holzer, 1968; I San Juan Basin. I Foote, Hays, & Klepinger, 1969 Fallon, Nevada ; tuffaceous sediments zeolitized tuff Tueller, Bruner, & Davis, 1972;Tueller, et al, 1974;Thordarson, 1985 lnterbedded sandstone Plowshare; gas-recovery enhancement ERC, 1970a;1970b & Davis, 1968Everett & Amundsen, 1975Everett & Arnundsen, 1975Koh & Rosencrantz, 1970;USGS, 1970;Wright, 1971a;1971b Calibration test for CANNlKlN test. Everett & Amundsen, 1975;Gonzalez & Wollitz, 1972Morris, Gard, & Snyder, 1972;Morris, 1973;Kirkwood & Fuller, 1972;…”