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. s <br />o • • <br />MINING AND RECLAMATION PLAN February 1981 <br />MT. GUNNISON N0. 1 MINE Revised March 1984 <br />Use 639D Caterpillar Scraper <br />From Distance vs. Production Table in Caterpillar Performance Handbook. <br />At 8% grade (our average worst c~ se) and a 2000' haul one way, a 639D Scraper <br />can move approximately 220 yd. /hour at 100% efficiency. Use 65% Machine <br />Availability/Efficiency. <br />220 X .65 = 143 yd .3/hour <br />The hourly rental and operating costs were calculated in the following manner <br />as recommended in the Rental Rate Bluebook for Construction Equipment. <br />Estimated Usage (hours/week) 60 <br />1. Total Hourly Rental Cost 3 61.03 <br />2. Total Operating Costs 70.55 <br />3. Machine Rental Plus Operating Costs 131.58 <br />4. Operator's Hourly Wage (including fringes) 20.50 <br />5. Total Rental and Operating Cost 3152.08 <br />Tapsoiling from Stockpile <br />Scraper cost is 3152.08/hour from Mobile Equipment Costs <br />The scraper can move approximately 140 yd.3/hour as shown under the Mobile <br />Equipment Costs. <br />E152.08/hour = 31.09/yd.3 <br />140 yd3/hour <br />Cost Per Acre <br />2420 yd .3 x 31.09/yd.3 = 32638 <br />Acre <br />4-34f <br />