2025-03-07_INSPECTION - C1981018

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February 26, 2025 C-1981-018/Deserado Mine TJ1 Number of Partial Inspection this Fiscal Year: 7 Number of Complete Inspections this Fiscal Year: 2 Page 4 of 13 SUPPORT FACILITIES - Rule 4.04: Support facilities that were inspected include the main facilities/portals area, RDH-2, B-Vent Shaft #1, Slot Storage, RDH-4, and the conveyor corridor. The main facilities for the Deserado Mine are composed of three benches. The lower bench contains the mine, office, shop, and portals. The middle bench contains the prep plant, and the upper bench contains a materials laydown yard and electric substation. The drainage structures in the main facilities area were functioning correctly. There were no indications of erosional features on the three benches and berms were in good condition. The material laydown yard is well kept and organized. The safety fence surrounding the electric substation was in good condition. The B Seam Vent Shaft #1 is located north of the main facilities off of the haul road. The pad was stable with no erosional features. The fencing around the shaft to prevent unauthorized entry was in good condition. The pad for RDH-2 rock dust tank is located to the north of the B-Vent Shaft #1. The pad for the tank was stable with no indications of erosion. Culverts under the road are clear and able to convey water properly. The Slot Storage Facility is located just to the south of the rail loadout. The pad that surrounds the Slot Storage is in good condition with a berm to control erosion. Equipment that was kept on the pad has been cleaned and organized. There were no erosional features noted (Photo 12). The pad for RDH-4 rock dust tank is located to the north of the Last Chance Pond. The pad for the tank was stable with no indications of erosion. During the inspection the Conveyor Corridor was traversed. Sections of the conveyor were being cleaned during the inspection. There were no indications of erosion underneath the conveyor. SIGNS AND MARKERS – Rule 4.02: A mine identification sign was observed to be posted on the right-hand side of CR-65 as the county road enters the permit boundary. The sign was placed in an unobstructed location and the text was easily legible. Information on the sign contained the mine permit number, permittee name and contact information (Photo 13). TOPSOIL – Rule 4.06 Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3; Redistribution 4.06.4: Topsoil stockpiles are located throughout the mine site. Topsoil stockpiles observed during this inspection include the facilities, B-Vent Shaft, and rail loop stockpiles (Photo 14). The stockpiles were protected by vegetation and showed no indications of erosion or instability. Topsoil piles that were observed had topsoil markers at the top of the pile. The markers are T-posts covered with pieces of white PVC. The markers were placed in visible locations and easy to spot. The facilities topsoil stockpile has armored channels that direct water. Channels are in good condition and show no signs of erosion.