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~• <• <br />r.. ~ '.G...:p Vii.' <br />_ - :~r ~.. <br />~ ~ . <br />OVERBURDEN SANDSTONE AND CLAYSTONE FILL <br />MATERIAL USED IN BUTTRESS TRENCH. <br />JOB NO. 6210 ~ A-2 <br />BEDROCK EXPOSED IN SIDELYALL OF BUTTRESS <br />TRENCH EXCAVATION, <br />