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Memo to eusan McCannon Ann Tatum - Angle o! Drav Clarification page 2 that, while I did not specifically remember the Golden Eagle mine's subsidence parameters, angles of draw determined for Colorado underground coal mines with low stratigraphic dips commonly fall in the range from 23° to 27°. I also recollect mentioning that extensive subsidence observations had been performed by the U.S. Bureau of Mines over longwall test panels mined in the Golden Eagle mine (previously the C, F & i Maxwell mine). i offered these comments in the spirit of cooperation with the intention of assisting people's comprehension of the situation. It is disappointing to realize that Mrs. Tatum has seen fit to suggest that my statements should be used to impeach. (2) "Daniel Harnandez on August 12, 1993, calculated the angle of draw at 30°." Mrs. Tatum's reference is apparently directed at a letter from Dan Hernandez to Mr. Michael A. Ossola of the Las Animas County Planning and Land Use Office, dated August 12, 1993. In the fourth full paragraph on page 2 of that letter Dan "calculates" the width of the potential subsidence halo in order to determine whether the Tatum's house was included within the projected area potentially effected by subsidence of the Golden Eagle workings. Dan did not "calculate" the angle of draw. Dan used the 30° value for the angle of draw contained within the revised permit documents for the Golden Eagle mine (page 2.05-58, subsequently revised 05-18-94). (3) "I have been advised that Jim Pendleton testified at hearings in 1994, with reference to the Baldwin property, that the angle of draw was 35°." I would recommend to Mrs. Tatum that she be careful about relying upon hear say. To the best of my recollection I did not testify at any of the hearings addressing Golden Eagle mine concerns during the year of 1994., I did, however, advise Joe Dudash of our staff concerning the Raton West - Baldwin Ltd. / Basin Resources controversy regarding potential subsidence impacts to the Rancho Escondido development. As a portion of that consultation I drafted a memorandum to Joe dated January 19, 1994. Within that memorandum (Paragraph 2, page 2) I presented the following recommendation to Joe: "Until they [Basin Resources] complete the determination of a more precise angle of draw I recommend that you use 35 degrees in determining whether proposed extraction might potentially impact any structures in Rancho Escondido." I recommended this assumed angle of draw with the understanding that it was