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1 <br />t' <br />t <br />1 <br />RELATIONSHIP <br />A. OVERALL SLOPE ANGLE (f~ ) <br />B. BENCH FACE ANGLE (9 ) <br />C. BENCH WIDTH (L ) <br />D. BENCH HEIGHT (H ) <br /> <br />BENCH FACE ANGLE (B) <br />BENCH HEIGHT \ BENCH <br />(H) \ WIDTH <br />( L) <br />OVERALL SLOPE ANGLE(~)~ SIN(B-~)XH <br />~ ~ I. L-SIN{~X SIN(80-B) <br />-I HX ANB <br />Z, (~_ TAN LX (~ ANBtH) <br />BENCH FACE ANGLE= 62° <br />BENCH WIDTH = 15~t 0.2 X BENCH HEIGHT <br />BATTLE MTN. GOLD CO. SAN LUIS PROJECT _ o°,E <br />SEPT. 1988 <br />vap ~. Ma. ___. <br />GEOMETRIC CONSTRAINTS <br />~o. <br />19 <br />STEEPEN ROBERTSON 9 KIRSTEN, Consulting Engineers <br />