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2004 Geologic Hazard Field Observations <br />South of Divide Mining Area <br />• Some cracks are expected occur to occur on the Dry Fork access road, particularly in the area <br />near the confluence of Deer Creek and Dry Fork, where overburden depth is at a minimum and <br />subsidence effects at a maximum for the South of Divide mining area. Maximum vertical <br />displacement (as much as 11.2 feet), tilt (up to 6 percent), and horizontal strain (as much as 4 <br />percent) aze projected in the drainage and on the road above the western limits of longwall panels <br />E2 and E3 should 14 feet of coal be mined. <br />• <br />r 1 <br />U <br />831-032.621 Wright Water Engineers, Inc. Page 3 <br />November 2004 <br />