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<br />MINING <br />E%PLORATION <br />EN OIN EERING <br /> <br />FRED M. JOHNSON, C.P.G. <br />GEOLOGIST <br />P.O. BOX 2182 <br />DURANG O, COLORADO 81302 <br />December 13, 1990 <br /> <br />OFFICE 909 2970119 <br />RESIDENCE 2979880 <br />T0: National King Coal, Inc. <br />SUBJECT: Quarterly Subsidence Monitoring, Fourth Quarter, 1990 <br />1) The fourth quarterly visual inspection for subsidence, King <br />Coal Mine, La Plata County, Colorado was made on a bi-weekly <br />basis from October, 1990 through November 30, 1990. <br />2)No new fracturing has occurred in SW; NE; SE a, Sec. 31, T35N, <br />R11W. <br />3) The fracture observed in SW; SE; NE a, Sec. 31, T35N, R11W <br />has not extended. It does not in any case threaten the Huntington <br />Ditch, as the ditch in this area has been realigned and lined <br />with an impermeable barrier. <br />4) Clifford Schmid, L.S. continues to establish monitoring <br />points and and determine possible movement by survey. <br />5) No other evidence of subsidence was noted during the fourth <br />quarter, 1990. Monitoring continues on a bi-weekly basis as <br />weather (snow cover) permits. <br />red M. Jo s n, C.P.G. <br />.. L i J ~ ~ w'.aY .~~9L'tih~f l~'/SL=~+IY:i YIaW ~ ~ ~' N~.I~~ V: _ <br />