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III. COMMENTS -COMPLIANCE Below are comments on the inspection. The comments include discussion of observations made during the inspection. Comments also describe any enforcement actions taken during the inspection and the facts or evidence supporting the enforcement action. facilitate regrading this area. The subsoil will be placed onto this same slope once the regrading is completed. All topsoil has been stripped for the Lone Pine fan construction. The pile is signed and silt fence has been installed around the base of the pile. MCC plans to seed the pile this fall. Topsoil has been stripped from the pad for the water tank construction. It is also signed and will be seeded this fall. SUBSIDENCE The first day of the inspection focused on subsidence and subsidence cracks that had been identified by MCC in the last two inspection reports. A subsidence crack was identified in the Lone Pine Gulch area that is in places, approximately five feet across and 30 feet deep. The crack extends about 50 feet. It is located near the section line between sections 17 and 20. The crack is closely located to the 2W1N panel in MCC's F seam, in section 20. It was completely developed and retreat mined in 1990. There is approximately 500=750 feet of overburden in this area. The Bear Mine has mined in section 17 in the C and B seams. The C seam was mined in the SE section of section 17, during early 1989, and is not close to the subsidence crack. Bear is now mining the B seam and in the area of the subsidence crack, the seam was mined at 50 percent extraction in the fall of 1993. The B seam overburden is about 900-1000 feet. Mr. Rold and I estimated the crack to be approximately 2-5 years old. The Division's concern was whether the crack, because of its size, could pose a threat to people, wildlife, or cattle. The crack is in a relatively remote area in Lone Pine Gulch above two rock outcrops. There is also a dense cover of oakbrush, which further limits the accessibility to the site. Mr. Larry Mautz, the landowner in section 20 is constructing a hunting cabin. The cabin will be directly over the area MCC intends to mine during the next 6-12 months. MCC is aware that Mr. Mautz is constructing this cabin and is in the process of determining where exactly the cabin is in relation to the mine workings. Mr. Every thinks the cabin is over the 6th or 7th panel. MCC is currently mining the 5th panel. MCC should review Rule 2.05.6(6) and perform a pre-subsidence survey of the cabin.