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Christine Johnston, MCC <br />November 19, 1998 <br />Page 7 <br />• Large crack trending about N-S for 50 feet or more; 4 to 5 feet wide and deep; sides are <br />nearly vertical. <br />• Crack is less than a year old. <br />CDMG-2 Located above the west edge of Panel 8. Cracks are all healed. No evidence of <br />cracking at all. <br />• CDMG-2A located 2~0 to 300 feet north, northwest of CDMG-2 on road above the <br />northwest comer of longwall Panel 8 are cracks trending about E-W 1/8 [o '/, inches wide <br />and about 4 feet long. Crack may also be a desiccation crack or at least have a desiccation <br />component to i[. <br />• CDIv(G-ZB located about 1,500 feet north, northwest ofCDMG-2 above an unmined area. <br />• Crenulate cracks in road that trend generally NlOE; '/z to 1 inches wide and 6 to S inches <br />deep, and 6-8 feet long. <br />• Another set trending E-W with en echelon pattern, '/z to 1 inch wide, 7 to 3 inches deep, <br />and perhaps 1 ~ feet long. <br />• Located about 1,000 feet northward of the northwest corner of longwall Panel 8, which is <br />outside the azea of mining influence. Thus, contrary to the dialogue on the video (when <br />not sure of location), these cracks aze not mine related but are bigger and more extensive <br />than the cracks at location CDMG-2A that may be mine related. <br />Location 13. Located in landslide topography (hummocks and leaning trees) above and area <br />near the northeast comer of longwall Panel 8 about 200 feet north of spring G-30. <br />• Slide has been moving for a couple of years; movement has occurred prior to mining. <br />Location 14. Located at spring G-30 above the northeast comer of longwall Panel 8. <br />• Existing small stock pond about 40 feet in diameter has been nearly all covered by toe of <br />a slide (old pond filled in June 3, 1997). <br />• Position of landslide toe has not changed since observations in August of 1997, but <br />cracks have filled in and rounded considerably. <br />Location 15. Located in landslide area roughly above the chain pillars between longwall Panels <br />8 and 9. Cracks-3 [0 4 in number, cracks firs[ noticed in area October 1996; healed <br />considerably inroad by traffic since May of 1998, compared to off road: <br />• Trend roughly E-W, as much as l feet wide and deep, offset northwazd as much as l2 to 14 <br />inches. <br />• Longwal] face had passed out of the area of influence by July 15, 1997. <br />• Mass-gravity movement estimated to be at least 90% of the cause of cracks. <br />Wright Water Engineers, Inc., 2490 W. 26'" Avenue, Ste. 100A, Denver, CO 80211 <br />Tel. 303!480-1700; Fax. 3031480-1020, e-mail:knvright@wrightwater.com <br />