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Mr. John Walters - page 2 • coal seems to be more fractured within several hundred feet from the fault. The east fault was approached at 7 locations within the mine. This fault, dipping approximately 60 - 70° to the northwest, has typically 4 to 12 inches of gouge and does not contain highly permeable materials. The Cameo coal seam is visibly arching within the mined graben. Water Inflow Into the Mine The first water inflow into the mine occured when the east mains reached the east fault. However, the inflow was limited and lasted only several days. Two exploration boreholes were drilled from the east face of the 1st and 4th mains through the fault toward the east at an updip angle of 45 to 36 degrees. Both boreholes penetrated the strata between the displaced parts of the Cameo coal seam and water was dripping from both boreholes for several months. At the time of the site visit, both boreholes were dry. A limited water inflow from the fault into the mine was observed at two other locations (5th, 6th and 8th, 9th crosscuts) where the fault was contacted by the mine crosscuts. Located at these locations are two of the three existing mine sumps. An increase in water inflow into the mine was observed in June, 1982 when the mine progressed approximately to the 12th crosscut. The Cameo coal seam floor in this area is at an elevation of approximately 5,580 feet. With the mine • advancing toward the northeast between June and December, 1982 the water seepage into the mine was gradually increasing. According to Mr. Walters, water was seeping through the floor between the mine face and about 200 yards behind the face. Small gullies eroded by water flowing toward the mine face are still visible in the mine. At the time of the mine visit no visible water seepage from the floor was observed, however, the mine floor in the last several hundred feet from the face was moist. There is no evidence of water inflow into the mine from the roof. No dripping or stains around the roof bolts were observed. Several boreholes drilled upward from the crosscuts 7 to 40 feet above the mine roof experienced only temporary dripping after completion. The only exception where water was found dripping from the roof was at the 1-14 crosscut. At this location the water dripping from the roof created a stalagmite type of icicle about 8 inches in length. Due to the type of water inflow into the mine it is difficult to measure the exact rate of water flowing into the mine. However, from well documented water handling between January, 1982 and January, 1985 it was possible to interpret the general trend of water inflow into the mine. According to the presented Salt Creek documentation, the mine water is stored in three in-mine sumps and pumped on an as-needed basis out of the mine. During the mine operation part of the mine water was used for dust control, a small quantity was exported to the Munger Canyon mine and the rest was pumped into the sedimentation pond and discharged into McClave Creek.