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i <br /> r <br /> i <br /> J <br /> a- <br /> PHOTOGRAPH 2: Bill Snavely of San Joaquin County and Marion Heaton of LLNL <br /> attempting to drive a sampling container into siltstone at the bottom <br /> of the 871-DlU1 excavation on July 26, 1994. When it was <br /> determined that the siltstone was too hard,samples were collected <br /> from the backhoe bucket. <br /> Q4 <br />