Laserfiche WebLink
Section 2.05.4(2)(c) Page 0 December 2021 (RN-02)  <br />Backfilling and Grading <br /> <br />This section addresses the requirements of Rules 2.05.3(6), 2.05.4(2)(c) and 4.14. <br /> <br />Backfilling Methods <br />Mining and backfilling operations at the New Horizon North (NHN) Mine were performed <br />concurrently. A combination of cast blasting and shovel loaded trucks removed the overburden <br />and parting materials then hauled the material to a previously mined area to be backfilled. Refer <br />to Map 2.05.3-1 Typical Cross-Section of Mining and Reclamation for an illustration of the <br />backfilling methods utilized at NHN. Along the crop line in the NHN Mine area, some box cut <br />overburden material was initially temporarily stockpiled outside of the area mined. This box cut <br />material was stockpiled in the south of the permit area and has been fully used to backfill all mined <br />areas. Map 2.05.4-1 provides the post mine topography for the disturbance area. Backfilled <br />material was placed to minimize effects on post-mining vegetation and ground water, minimize <br />off-site impacts and is supports the approved post-mining land use. <br /> <br />General Grading Requirements <br />Dozers were utilized for grading of overburden, Bench 1 and topsoil at NHN as illustrated on Map <br />2.05.3-1 Typical Cross-Section of Mining and Reclamation. <br /> <br />Disposal of Excess Spoil <br />No excess spoil material exists at NHN. <br /> <br />Post-Mining Topography <br />Map 2.05.4-1 provides the post-mining topography which is similar to the existing topography. <br />Cross-section locations and typical cross-sections through the mining areas are also shown on this <br />map. These cross sections show original and postmining ground elevations. <br /> <br />Slides and Other Damage <br />NHN does not anticipate any problems with slides during reclamation activities. <br /> <br />Postmining Drainage Channels <br />No postmining drainage channels will be constructed at NHN.