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~ • <br />• EXHIBIT D (Revised 3-10-78)7~34~{ <br />6 <br />(ii) P~Soderate Disturbance (5S acres of zgg affected acres) <br />Roads, incl. 12 acres of old quarry floor 30.0 acres <br />Crushers, Belt Conveyors, Quarry Mainte- <br />nance, Powder Storage, etc. 18.0 acres <br />Old quarry floor or graded overburden <br />disturbed prior to July 1976, but impractical <br />to isolate from current operating areas 10.0 acres <br />Total 58.0 acres <br />(iii) Minor Disturbance - None <br />(e) A Timetable to Help Describe the Ivtining Operation <br />A long-range operation (80 to 100 years total) of this <br />nature which depends primarily upon cement sales forecasts, <br />• production of special cements, additional exploration dril- <br />ling and many contingency factors, cannot be scheduled with <br />a high degree of accuracy. <br />Quarry operation and reclamation equipment are expected to <br />change through the years as are techniques. Beneficiation of <br />quarry rock by separation of contaminants is likely to enable <br />use of limestone now considered as overburden and extend re- <br />serves. An outside source of higher quality limestone to <br />enable use of more overburden is possible. <br />Cement production is a highly competitive enterprise and post <br />factors can effectively increase cr decrease quarry reserves. <br />Ideal will be glad to attempt to furnish any specific time <br />• or phase factors not adequately explained in other sections <br />of the :wining plan. <br />