US PATENT SUBCLASS 976 / DIG 424
PEACEFUL APPLICATIONS OF NUCLEAR EXPLOSIVE DEVICES [G21J-3/00] *** (obtaining oil, gas, water, soluble or meltable material from deep wells by means of nuclear energy E21B-43/236F, 43/24F)

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976 /   HD   NUCLEAR TECHNOLOGY

DIG 424PEACEFUL APPLICATIONS OF NUCLEAR EXPLOSIVE DEVICES [G21J-3/00] *** (obtaining oil, gas, water, soluble or meltable material from deep wells by means of nuclear energy E21B-43/236F, 43/24F) {1}
DIG 425  DD  .~> For excavation [G21J-3/02]