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box cut and will advance towards the northwest and southeast. The area shown on Exhibit 12-2 as <br />"Mined Out" was mined during the time period of 7990 -September, 1998. The mining sequence will <br />be altered somewhat from that shown on Exhibit 12-2. The slide that occurred at Topsoil Stockpile N <br />has raised additional stability concerns for the topsoil. Therefore, mining will not advance any further <br />towards Inorthwestl the topsoil stockpile from the current 11-1-93 pit configuration. This will remain <br />in effect until the topsoil stockpile is respread or moved to a new location. This does not affect the pit <br />to the north of the stockpile lupper half of the pill. Mining will continue towards the southeast, as <br />shown on Exhibits 12-2 and 12-3, until the recovery line is reached in the year 2000. Auger mining <br />will then commence in the spdng of 2000 at the far west end of the final highwall near Pond 006 and <br />progress to the east, as shown on Exhibit 12-3. All aspects of the angering operation are described in <br />. Attachment 12-Z, Auger Mining. It should be pointed out that scrapers may be used in cropline areas to <br />either strip or pre-strip a pit for the dragline. This procedure will be conducted in areas where <br />disturbance beyond the cropline is to be avoided due to sediment control restraints or to prevent <br />spoiling into a drainage. This will complete mining in this block. <br />Coal haulage in this block will be conducted on the Mine Entrance Road and (Haul Roads A, F, and H.1 <br />The empty trucks will be brought into the mine site via the Mine Entrance Road and then traverse Haul <br />Road A and, in some cases, into the pit area. From Haul Road A or H, the trucks will branch off to in- <br />pit ramps, depending on the location of coal loading operations. The coal beneath a portion of Haul <br />Road A will not be recovered until 1995 as shown on Exhibit 12-2. This will allow access to the upper <br />block of coal to remain open. The loaded trucks will continue through the pit area and down Haul Road <br />F to the Mine Entrance Road. Weather or unanticipated production problems may cause some deviation <br />of the haulage scheme and loaded trucks may be hrought back down Haul Road A. <br />Although Haul Roads B and C may never be constructed, [hey will remain a part of this plan. In the <br />event that unforeseen problems arise with the proposed haulage system, roads Band/or C may have to <br />be constructed as alternate routes. <br />Middle Block (Deadhead Routel~ Mining in the middle block will commence in the fall 1992. The <br />dragline will sidebench the first pi[ on the east side and cast the spoil behind, or [o the west, of the <br />dragline. This will be accomplished as the dragline moves from the Lower Block to the Upper Block. <br />The next cu[ in this area will be accomplished as the dragline moves back to the Lower Block from the <br />Upper Block. The final cut in this area is expected to take place in 1993 on a subsequent move from <br />one area to the other. Exact timing of the mining of this block is subject to the mining operations in the <br />Upper and Lower Blocks and may deviate from the above schedule. <br />Coal haulage from this area will be conducted via Haul Road A and Haul Road G. Haul Road A will be <br />extended to the Upper Block on or near the Deadhead Route area as shown on Exhibit 12-2. <br /> <br />7 <br />Revised 04/00 <br />r <br />