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~' <br />BEDROCK EXPDSED IN SIDEWALL OF BUTTRESS <br />TRENCH EXCAVATION.. <br />.~ r. ..~`r( .' <br />.. .. _ r <br />c - Y ~ .. ' <br />OVERBURDEN SANDSTONE AND CLAYSTONE FILL <br />MATERIAL USED IN BUTTRESS TRENCH. <br />JOB NO. 6210 A-2 <br />