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. _ ~ .:.oa .~w...., ... .._ <br />• <br />Permi(# M-1977-147 <br />Mining Plan and General Geo__~. <br />Exhibit D <br />The deposit being mined is classified b}~ the U.S.G.S, as belonging <br />to the Intermediate Quartz Monzonite Group of the Lower Eocene, The <br />_ deposits were intruded into the eight-degree, east dipping Fountain <br />sedimentory formation of the Pennsylvanion, The rock, where exposed, ~I <br />has a columnar structure and is exceeding clean and hard. The colums <br />are tall, vertical, and impressive, Laboratory tests have confirmed this <br />ruck for use as a concrete aggregate. <br />The deposit being mined is approximately 1000 feet east - west <br />• and 500 feet north -south. South Saint Vrain Creek cuts through the <br />base of the deposit leaving the average height of the deposits at about <br />110 feet. This deposit yields approximately 1 ton per 12.5 cubic feet <br />of in place material, P,oth sides of the canyon through the deposit area <br />are extremely rugged with sheer near vertical rock walls, Many large <br />boulders up to desk size are found on the slopes and in the creek, <br />Scope of Operations <br />1, Developing ARgreRate Deposit <br />Andesite Rock Company shall carefully clear overburden from the <br />deposit, The working face of the deposit shall be located and operated <br />so as not to detract from the usefulness of the deposit area or any <br />adjacent area. Stripping both from prior mining and future operations <br />. shall be removed, stock-piled, and re-utilized for restoration and <br />reveget~tion efforts. <br />