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ERHIBIT VIII <br />PARACHUTE PIPELINE <br />SUBSIDENCE CALCULATIONS <br />DORCHESTER COAL MINE <br />10.2' MODEL - R-60 GRADE <br />DISTANCE = 297.5 <br />DEFLECTION = 10.2 <br />PIPE O.D. = 8.625 <br />W. T. _ .203 <br />SHEAR AREA = .3868633 <br />q = 8871.606 <br />St = 3641.875 <br />Z = 14.4016 <br />PIPE I.D. = 8.219 <br />GRADE = 60000 <br />INTERNAL PSI = 1100 <br />I = .0022979 <br />MOMENT = 6864.197 <br />S bend max = 7454.982 <br />LENGTH STRAIN = .0016158 <br />LENGTH STRESS = 48475.32 <br />Sx max = 55930.3 <br />Se = 8862.416 <br />8862.416 < 43200 TRUE <br />32230.64 < 32400 TRUE <br />-169 <br />PARACHUTE PIPELINE <br />SUBSIDENCE CALCULATIONS <br />DORCHESTER COAL MINE <br />10.2' MODEL - R-65 GRADE <br />DISTANCE = 297.5 <br />DEFLECTION = 10.2 <br />PIPE O.D. = 8.625 <br />W. T. _ .188 <br />SHEAR AREA = .3882425 <br />q = 8230.007 <br />St = 3648.053 <br />Z = 13.38461 <br />PIPE I.D. = 8.249 <br />GRADE = 65000 <br />INTERNAL PSI = 1100 <br />I = .0021393 <br />MOMENT = 6390.478 <br />S bend max = 7454.982 <br />LENGTH STRAIN = .0016158 <br />LENGTH STRESS = 48475.32 <br />Sx max = 55930.3 <br />Se = 9096.328 <br />9096.328 < 46800 TRUE <br />34329.04 < 35100 TRUE <br />-771 <br />