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MINING AND RECLAMATION PLAN January, 198„ <br />MT. GUNNISON N0. 1 MINE <br />REFERENCES <br />1. Farmer, I. W., "Engineering Properties of Rocks", London, E 8 F.N. ,, <br />LTD., 1968. <br />2. Hustrulild, W. A., "A Review of Coal Pillar Strength formulas", Rock <br />Mechanics 8, 1976, pp. 1155-145. , <br /> <br /> <br /> <br />3-89 <br />