Laserfiche WebLink
0 <br />• <br />horizontal tensile strains could result in development of surface cracks in the vicinity of the mining <br />section. <br />TABLE 1113 <br />PHYSICAL TEST RESULTS <br />MINE OR FORMATION <br />ANGLE OF <br />INTERNAL <br />FRICTION (�) <br />COHESION <br />(c) <br />REFERENCE <br />Lower Fort Union Formation <br />29.60 <br />404 psi <br />Fahy & Smith, 1976 <br />Decker Mine <br />35.00 <br />850 psi <br />Lee, Smith & Savage, 1976 <br />Hanna, Seam 82 <br />36.20 <br />448 psi <br />Dravo, 1975 <br />York Canyon Seam <br />48.70 <br />315 psi <br />Atkinson - Noland & Assoc., <br />1976 <br />York Canyon Seam <br />46.00 <br />332 psi <br />Gentry, 1976 <br />Beehive Mine, UT <br />35.70 <br />1016 psi <br />McGovern & Ko, 1976 <br />AVERAGES <br />38.50 1 <br />560 psi <br />• Midterm Review (8/2002) III -15 <br />