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<br />COLORADO WESTNORELANb INO <br />1' x 1' x 3' WOODEN BLOCKS <br /> <br />Both surfaces covered with an approved sealant <br />Spaces between blocks filled with rockdust <br />p <br />R ~ <br />~ S <br />t , <br />~ <br /> - <br />I <br /> <br /> <br /> <br />I I <br /> ~ <br />~ <br /> <br /> <br /> <br /> <br />~ ~ <br />/ <br />~ <br />~ <br />~ <br />~ <br />/ <br />i <br />Trench in the floor to provide level area to lay block <br />SQUEEZE TYPE WOODEN BLOCK STOPPING (Permanent) <br />SOI00035 <br /> <br /> <br /> <br />23 <br />