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EXHIBIT VII <br />PARACHUTE PIPELINE <br />SUBSIDENCE CALCULATIONS <br />DORCHESTER COAL MINE <br />10.2' MODEL - R-42 GRADE <br />DISTANCE = 297.5 <br />DEFLECTION = 10.2 <br />PIPE O.D. = 8.625 <br />W, T. _ .322 <br />PIPE I.D. = 7.981 <br />SHEAR AREA = .376008 <br />q = 13886.17 <br />St = 3593.728 <br />Z = 22.20975 <br />LENGTH STRAIN = .0016158 <br />GRADE = 42000 <br />INFERNAL PSI = 1100 <br />I = .0034958 <br />MOMENT = 10442.62 <br />S bend max = 7454.982 <br />LENGTH STRESS = 48475.32 <br />Sx max 55930.3 <br />Se 7897.913 <br />7897.913 < 30240 TRUE <br />22630.06 < 22680 TRUE <br />-49.9 <br />PARACHUTE PIPELINE <br />SUBSIDENCE CALCULATIONS <br />DORCHESTER COAL MINE <br />10.2' MODEL - X-52 GRADE <br />DISTANCE = 297.5 <br />DEFLECTION = 10.2 <br />PIPE O.D. = 8.625 <br />W, T. _ ,25 <br />SHEAR AREA .3825574 <br />q = 10868.02 <br />St = 3622.673 <br />Z 17.54036 <br />PIPE I.D. = 8.125 <br />GRADE = 52000 <br />INTERNAL PSI = 1100 <br />I = .0027837 <br />MOMENT = 8315.283 <br />S bend max = 7454.982 <br />LENGTH STRAIN = .0016158 <br />LENGTH STRESS = 48475.32 <br />Sx max = 55930.3 <br />Se = 8347.349 <br />8347,349 < 37440 TRUE <br />27322.35 < 28080 TRUE <br />-7 58 <br />