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• <br />EXHIBIT D <br />MINING PLAN <br />The two construction materials [o be removed from the CF&I quarry site are high <br />calcium limestone and awell-balanced calcium-magnesium dolomite. There is no toxic <br />or potentially toxic material to be mined or used in processing at this site. No acid <br />producing minerals are mined or exposed. <br />There are two types of material deposits. One is limestone and dolomite, in place, <br />and limestone spoils deposited by CF&I from its limestone crushing and siting operation <br />created the second deposit. The spoils deposit is approximately 75 foot high, 200 to 500 <br />foot wide and 1000 foot long. <br />The mining plan for the spoils pile is simply removing the stockpile down to the <br />ground level that existed prior to the placing of the stockpile by CF&I years ago. <br />Removal will be accomplished by front-end loader and trucks. A track dozer will be used <br />from time to time to keep the high wall at a safe elevation. The area remaining after the <br />stockpile is removed will be a generally flat plane sloping gently down the canyon in a <br />northeasterly direction harmonious with the surrounding topography. <br />One hundred foot thick deposits of limestone and dolomite lie in place at a dip of <br />about 37 degree to the northwest on the wall making up the southeast portion of the <br />permitted area. These deposits were uncovered and exposed by CF&I in their quarrying <br />operations at [he base of the former quarry high-wall. The limestone lies immediately on <br />the top of the dolomite deposit. <br />The limestone and/or dolomite deposits lying on the wall will be quarried by <br />gaining access to the top of the area to be mined on existing roads or roads pioneered to <br />the area on the land adjacent to the permitted area. (See easement agreement at Exhibit <br />0 ). Quarrying will commence by drilling and blasting the limestone and/or dolomite in <br />a series of underhanded benches. There will be a temporary access road to each bench <br />level. The individual benches will be quarried in "lifrs" or benches about 50 foot high. <br />The ore will be drilled with conventional quarry drilling equipment, blasted with <br />conventional quarry explosives, loaded into off-highway rock trucks with front-end <br />loaders or excavators and hauled to either a crushing and screening plant or a stockpile, <br />both of which will be located on the permitted area. Stockpiles will be temporary prior to <br />processing, crushing and screening, or loading into highway trucks for transport to a <br />remote crushing and calcining plant or directly to customers. <br />The limestone and dolomite continuing down from the base of the old CF&I <br />quarry (See cross section on a following page) is overlain with rock overburden material <br />