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• • ERHIBIT D (Cont'd) <br />Alining will occur in three stages so as to minimize surface <br />' disturbance at any one time (see map Exhibit D-1). As the mineral <br />' in Stage O nears depletion, it will become necessary to begin <br />Stage 1 so that the proper mixes of clay may be maintained (see <br />' discussion of geology later in this Exhibit D). Thus, while mining <br />is nearing completion on the south end, mining will begin just north <br />' of the Church Ditch and proceed in a northerly direction. As soon <br />as landfills have been completed just south of the present site of <br />Church and AlcKay Ditches, these ditches may be relocated so that <br />' the clay underlying the ditch sites may be extracted. LVhen mining <br />starts on the north end of the property, it will be necessary for <br />the operator to construct a ditch crossing. <br />Stage 0 will be six and one-half years while Stages 1 and 2 <br />will each be six years in length. Each of the three stages will <br />' be followed by a reclamation phase. (See Exhibit E, Reclamation <br />Plan.) <br />' The pit is operated year-round by Lake~eood Brick as a source <br />for various clays used in its operations. <br />Geology. The clay being mined at the Church Pit is from the <br />' basal members of the Laramie formation of Upper Cretaceous age. <br />These claystone beds dip to the east at approximately 45 degrees <br />and the strike is about N 1° 30' L9. There are four distinct clay <br />beds insofar as quality and color of the end product are concerned <br />' (see the figures below). These clays fire with different color. <br />' The clay mined from Zone 4 is the least desirable and is only <br />G <br />