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1 <br />1 <br />1 <br /> <br />1 <br />1 <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br />1 <br /> <br />ERHIBIT D (Cont'd) <br />Mining equipment may include, but is not limited to, <br />bulldozers, front-end loaders, scrapers{q motor graders and dump <br />trucks. <br />Holes drilled during the recent drilling program and the <br />area geology evidence clays below the soil overburden oaring <br />on thickness from 10 to 70 feet; the average thickness is <br />approximately 40 feet. Quality and characteristics of the clay <br />fluctuate dramatically with lateral progress. These dramatic <br />lateral changes may make it necessary for Robco to change the <br />sequence of staging from time to time. Should this occur, <br />the proper technical revisions will be submited to the MLRB. <br />Nothing in the mining methods of reclamation plans will be <br />changed. <br />Several drill holes encountered the same small amounts <br />of water in the basal members of the overburden sand that was <br />mentioned erlier. Its location is unpredictable because of the <br />lateral facies changes. Leakage from this zone is easily stopped <br />by covering with overburden. It is not expected that damage <br />will occur to any aquifer. Yhese are very minor seepages that <br />require the working face to be drained. When backfilling starts, <br />the seepage will be completely stopped. <br />Very minor amounts of water may be used to control dust <br />under the most adverse traffic or wind conditions. In <br />general, water on a clay surface creates a very slick condition, <br />making it most difficult to work, so watering will occur only <br />when absolutely necessary to control fugitive dust. <br />12 <br />