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i <br />~~ , <br />'+ ;4.~'~'~•~~ NOTE: "E" and "F" coal <br />Rocky Mountain Geotechnical <br />~~ ~ -- - - seams discussed are actually <br />Achieving Ha/mpny with Ea,Lh <br />Y ~ ~ "D" and "E" coal seams. <br />i. <br />f <br />~t <br />i' <br />Ft <br />E.t <br />y <br />~, <br />~' <br />~, <br />~' <br />!' <br />~' <br />it <br />`r ~ ADDITIONAL TESTING S CONSULTATION <br />~~nR.~~~ 111~~~ RED CANYON MINE <br />L DELTA, COLORADO <br />November 3, 1981 <br />Grand Mesa Coal Company <br />P 0 Bost 226 <br />Delta, CO 81416 <br />Attn: Larry Reschke <br />Dear Larry; <br />Transmitted here:~~ith are the results of some additional testing <br />involving both chemical analysis and physical testing on the 10- <br />foot roof overburden, 10-foot of the underburden, and on the coal <br />seam itself in the vicinity of a proposed ne:u mine facility to be <br />developed in the E seam at the existing Red Canyon 61ine site. <br />We are also providing some general information and opinions re- <br />garding the effectiveness of different types of roof bolting sy- <br />stems for support of the mine roof during the mining operation. <br />Respectfully submitted, <br />ROCKY MOUNTAIN GEOTECHPIICAL <br />Kenneth L. My rs,~ <br />KL;•1/sam <br />RMG Job Clo. 2662 <br />.' <br />i' The Railroad Station 555E Pikes Peak Ave . Suite 107 Colorado Spnngs, Colorado 80000 (300) 634-1999 <br />i <br /> <br />