The mine accessed the Pittsburgh No. 8 coal seam by two portals: the Camp Run Portal and the Margaret Slope Portal. Coal was transported via overland conveyor belt from the slope to the Robinson Run Preparation Plant, located near Lumberport, Harrison County, West Virginia
Coal was mined from the 64-inch-thick seam by four continuous mining machine sections and one longwall section. The mine typically operated eight-hour production shifts, three shifts a day, six days a week. The mine was ventilated with six main mine fans. Coal was transported from active workings to the Margaret Slope Portal by a conveyor belt system and brought to the surface via a slope belt. Battery- and dieselpowered rail-mounted vehicles were used to transport supplies and mine personnel.
Description Longwall:
- Seam – Pittsburgh No 8;
- Seam height - 79 inches;
- Cutting height - 94 inches;
- Panel width - 1,518 ft;
- Panel length – 13,300 ft;
- Overburden – 1,100 ft;
- No. of gate entries - 3;
- Depth of cut - 39 inches;
- Shearer - Joy 7LS1D, double-drum ranging arm shearer with 1,880 hp installed;
- Haulage system - Ultratrac 2,000 ;
- Roof support yield (tons) – HBT 862;
- Roof support controls (type) – N/A;
- Face conveyor type (strand, motors) - CEMI, 48 TIB 3x1,900;
- Face conveyor drives – HBT/CST;
- Face conveyor width/speed - 1,000 mm/378 fpm;
- Stageloader type, width, speed - CEMI, 1,20 ........