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Kathy Welt, MCC <br />July 20, 1998 <br />' Page 7 <br />Does a barrier exist between the Bear B-Seam Mine and the Edwards Mine? Yes, Bear <br />likely used the Edwards Mine maps to design where to slope down from the C-Seam into the <br />B-Seam, specifically to avoid breaking into the abandoned Edwazds Mine workings. <br />' What was the southern extent of [he Bear C-Seam mining? Did they mine the C-Seam <br />beneath Lone Pine? The green outline of the C-Seam mining was pointed out on Exhibit 1. <br />Bear did not mine the C-Seam beneath Lone Pine Gulch. The development of Third West in <br />' the C-seam was completed a short distance and was stopped for reasons unknown to MCC. <br />What was the temperature of the water sampled at the horizontal drill hole? The <br />' temperature was about 74°F, compared with water from the Edwards Portal spring at around <br />86°F. There is another heat sowce and there is strong evidence of spontaneous combustion <br />continuing to occur (as it historically has, according to MSHA) in the Bear C-Seam <br />wworkings. <br />'" - e the Edwards Portal spring water is not coming from the West E!k Mine, where is it <br />coming from? That is not MCC's responsibility to determine, but one possible source is the <br />' infiltration of precipitation or snowmelt through the colluvium, particularly through the <br />cracks that have developed over the years in the shallower overburden near to the outcrop. <br />D:\831-032MIIjmk\6-30 CDMG Mig.doc <br /> <br />1 <br /> <br /> <br /> <br /> <br />1 <br />1 <br />