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SUBSIDENCE PROFILE, A-SERIES <br />Semi-Annual Report, July -December 1991 <br />Twentymile Coal Company, Foidel Creek Mine <br />Subsidence (ft) <br />0 <br />-1 <br />-2 <br />-3 <br />-4 <br />-5 <br />Profile Distance (thousand feet) <br />0 1 2 <br />