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' The mining of unit 4 is to begin subsequent to the approval of this <br />amendment. It will move from north to south in segments currently indicated <br />as 150,000 ton increments. The projected schedule for 1980-81 shown semi- <br />' annually indicates an approximate mining volume of 50,000 tons per month. In <br />the initial stages of the mining of unit 4 a haul road will be necessary south <br />' through the center of the unit to the existing plant site. Unit 4 will be <br />' reclaimed in an over the shoulder manner as the mining moves southward. <br />Nominal pit depth will be 15 feet. General equipment and man power profiles <br />' have not changed substantially from those proposed in the original 112 permit. <br />' ANTICIPATED PRODUCTION* <br /> (1,000 Tons) <br />' 1981 <br /> Product 1980 First Half Second Half <br />' C-33 Sand 40 110 50 <br /> Class 4 Road Base 85 100 60 <br />' 3 Inch Minus Rip Rap 10 40 -- <br /> Class 2 Filter rock 10 40 -- <br /> <br /> Concrete Aggregate 10 10 <br />' Miscellaneous 5 50 50 <br />1 <br />1 <br /> <br />t <br />' * Based on actual contracts to date excepting "miscellaneous". <br />1 <br />