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<br />`~ G Mobi/e • III I II I I I I II IIII III ~/' ~ 14~ west 64th Avenue <br />(`, (y n R-4P , Post Dllice Box715001 <br />~ p~m~ 999 u Denver, Colorado 80221 7475 <br />~1 2 303416.0044 <br />AVl4stemMobileCanpany Fax303~ 416 5469 <br />Dispatch 303 ~ 416 ~ 1919 <br />September 28, 1993 <br />'~ N)r~ , <br />Colorado Department of Natural Resources <br />Division of Minerals and Geology <br />1313 Sherman Street <br />Room 215 <br />Denver, Colorado 80203 <br />Re: Specification Aggregates Permit, File No. M-74-004; Rock Stability <br />Dear Bill: <br />1 spoke with Bruce Humphries last week regarding your recent inspection and the fact that we <br />currently are backfilling the benches far in excess of the minimum requirement of ~~ur permit. <br />Bruce mentioned that in filling, we may be creating a stability problem. [ explainf:d to Bruce <br />that there was a stability analysis performed by Robert H. Merrill, a mining engineer, dated <br />January 27, 1981, of which, I have enclosed a copy. <br />1 trust that this will assist you in the stability assessment at our Specification Aggregates quarry <br />and should you have any questions regarding the stability, please contact our offices. <br />i nc r~, - <br />John F. Hickman <br />Land & Resources ~4anager <br />Enclosure <br />1FH:am <br />(c:\wp51 \john\m74004. sth) <br />