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\ ~ <br />r ~' ^~ ~ ~ ~~~ ~ ~~~~~~~ ~~~ <br />r _. . <br />!MFR - 51995 <br />..... U-r .. OI :IJLy•J: ~IE ~.. ol4~ <br />Randy Price <br />Mined Land Reclamation Division <br />423 Centennial Bldg. <br />1313 Sherman St. <br />Denver, CO 80203 <br />Dear Mr. Price: <br />We hove lust received Merrick's mass balance for cuts and fills from <br />2-10-84 to 12-21-84. After talking to you about wanting an <br />overburden swell factor rather than a net swell factor, I have made <br />the following ad,7ustments to their attached read out. <br />To the 252,084 C.Y. difference between cute and fills I have added <br />350.000 X 11/12= 297.068 C.Y. and divided by the cut i.e., 549,152 <br />1.08 <br />divided by 2,789,384 = 19.7%. To get a life o£ mine swell factor I <br />have added the numbers presented in the Mid-Term Review to the above <br />_.._ ....dad an addltionai coal tonnage of 379,167 i. 9'he formula <br />would be Fills - Cuts + Coal tvdF.) _ ~LUoI~ Factor <br />Cuts <br />(3.041,468 + 3.460.146)-(2.789.384+3.267,978)+(297.068 + 379.167) <br />1.08 <br />2.789.384 3.267.978 <br />6 501.614 - 6.057.362 + 648.148 = 18.0% Life of mine swell <br />factor. 6,057,362 <br />These numbers appear low because we compact our spoils with rubber <br />tired equipment. <br />I hope this meets the requirements <br />swell factors. Thies will nlso be <br />responses to TR concerns. <br />and answers your questions about <br />addressed at greater length in <br />Very truly yours ~ „ -- • " <br />'- . <br />~~ lC~~~_._. <br />John G. Althouae, <br />Mine Engineer Supervisor <br />JA/~1 <br /> <br /> <br />