| effect of gamma radiation on native endolithic microorganisms from a radioactive waste deposit site. | a time-course experiment was conducted to evaluate the effects of gamma radiation on the indigenous microbiota present in rock obtained from yucca mountain, nevada test site. microcosms were constructed by placing pulverized yucca mountain rock in polystyrene cylinders. continuous exposure (96 h) at a dose rate of 1.63 gy/min was used to mimic the near-field environment surrounding waste canisters. the expected maximum surface dose rate from one unbreached canister designed to contain spent nucl ... | 1999 | 10381842 |