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March 29,2022 C-1981-019/Colowyo Coal Mine ZTT <br /> Construction 4.03.1(3)/4.03.2(3),Drainage 4.03.1(4)/4.03.2(4), Surfacing and Maintenance4.03.1(5)and <br /> (6)/4.03.2(5)and(6),Reclamation 4.03.1(7)/4.03.2(7): <br /> Haul roads and primary in-pit roads were well maintained given the muddy conditions. <br /> SIGNS AND MARKERS—Rule 4.02: <br /> Mine identification signs were inspected throughout the site.No issues were observed. <br /> SPECIAL CATEGORIES OF MINING—Rules 4.22 through 4.27: <br /> The highwall miner was operating at the time of the inspection. Current highwall mining is occurring at the <br /> southern extent of the approved disturbance boundary within the Collom Gulch. Additional backfill was observed <br /> along the Collom Gulch corridor to allow for the highwall miner to access an upper coal seam. <br /> •i � <br /> �<r <br /> TOPSOIL—Rule 4.06 <br /> Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3; Redistribution 4.06.4: <br /> Additional topsoil placement was observed at Topsoil Pile 26A which is located north of the Collom Pit area. <br /> Number of Partial Inspection this Fiscal Year. 6 <br /> Number of Complete Inspections this Fiscal Year 3 <br /> Page 8 of 10 <br />