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Psge 2 • • _ The Seao Sandstone is a medium-graiaec gray and 'crow sandstone about 35 feet thick. The Moun: Garfield Formation contains fine-to-medium grata sandstone, shale, and coal. This _°ormation is 1,050 feet Chick. Ia the ?count Garfield Formation about 50 feet above Sego Sandstone is the Palisade coal zone which consists of coal lenses is a chick carbanaceom shale. :his zone varies from 10 to 70 feet is thickness. The D, E and F beds is thin zone '_ack continuity sad are limited in areal ezteac. The Cameo coal zone overlies the b;-foot thick Rollins Sandstone and is the moat productive coal zone is the look Cliffs field of Colorado. She B and C beds are preaeac in this zone. the C bed is D to 30 feet above the B bed. The thin iacerburdea precludes mining both beds. The B bed dips SZ is a N 25~ E direction. The roof consists of shale, while the floor has 0 to 6 inches of shale sad over LO feet of sandstone. She overburden varies from 200 to 1,800 feet. There are sandstone dikes that appear unpredictably is ebe Cameo B bed. These dikes require drilling and blasting for removal. The thickness of the dikes range from a few inches to a couple of feet. There are faults surrounding the lease area, but none are know to extend into the mine area. She lease area is free of cultural and arehaeologie resources. There appear to be ao valuable minerals ezcept coal on the lease area ar app conflict with oil and gas interests. Descrincion Of ADDlltaat~! Proooeal GE% drove ehree•partals into the hillside. From the portals, the company mined five entries north for 4,100 feet. After the 1st North Maiaa were driven 1,100 feet, the 3rd East Mains were turned. All the mains and submains are five entries oa 100- by 100-_fooc centers sad are 18 to 20 feet wide. The 3rd Eaet section is driven 4,600 feet eo the Cc'E property lice. Zhird Eaec i, one of two active snetions in the Cameo #1 !Sine. Chen the 3rd Eaat section is 1,100 feet in, the 1-A North Maiaa will be turned and driven 4,400 feet. This section will be driving through the proposed Lease C-01538 modification area. The 4th East section will lea be turned of_` of the 1-A North !!sins and driven 2,600 feet. Four longvall psnela 510 by 3,300 feet will be blocked out eo the north using a cw-entry system on 75- by 100-foot centers. A 200-foot barrier wi: be left co protect the mains. Along both sides of the 1-A North Mains, room and pillar panels will be developed by using a five-entry system. Rooms vi 11 be drives oa both sides of the submaina for a distance of 600 feet from the center Line of the submains ar within SO feet of the property Liae if this distance is less than 600 feet. Pillar extraction will be accomplished using the pillar slabbing method which is similar to the wing-and-pocket recovery. Jhea the 1st ;forth `Snips are d.-'_vea 4,100 fete, 2nd Jest :Snips will be turned and driven 11,200 feet. ?resently, the 2nd Jesc section has mined 2,800 feet sad are about 2,000 feet from the lease boundary. Eighteen longvall panels, x,300 Sy 510 :set, will be blocked out co the north asing the same two-entry system as the longvall panels of` of 4th 3asc. Jhea the last five northern, '_ongvall panels are being developed, nine longvall pane l5, 4,300 bo 510 =set, cr_11 start be tag developed on :tie souCh :rpm the :+escetn lease Boundary, after a few southern lon3wal'_ panels have been