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7 <br /> culverts and minor maintenance will also be developed on roads <br /> I, on an as needed basis meeting BLM standards and specifications <br /> I (Table 1) . <br /> No more than 70 ,000 tons of mineral , overburden, or combina- <br /> tion thereof will be removed by the operator in any one calendar <br /> year. All granite mining operations will be specified by se- <br /> quential lots purchased from the BLM (Canon City District Office) <br /> under the Materials Sale Act of July 31 , 1947, 61 STAT 681 ; and <br /> the Multiple Surface Use Act of 1955 , PL 167 , 69 STAT 367 . The <br /> anticipated starting date for mining is October 31 , 1982 , with <br /> the life of mine (50 years) concluding October 31 , 2032 . <br />