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The failure appears to be translational, likely along bedding planes. The rockmass <br />quickly rubblized and behaved much like a soil-type landslide, exhibiting spreads at the toe and <br />pressure ridges. The most notable ridge was observed on the north side of the slide failure <br />where the active working mine bench in Area H, being drilled for production blasting at the time <br />of failure, provided buttressing support to the quarry wall. Relict bench geometry can be <br />discerned in the landslide debris. <br />In the context of safety and both short- and long-term quarry stability, CGS has concerns <br />about large unstable rock blocks that are now defined by the unsupported "hanging" walls of the <br />landslide headscarp and openings of concurrent tension cracks at the top of the slope. above <br />both the south and north sides of the rockslide. These upper rock blocks of still intact mine- <br />bench remnants can be seen in figure 1 above the landslide scarp (upper yellow dashed line) <br />and below the tension cracks (only large tension cracks are shown as red dashed lines in figure <br />Figure 1. Oblique aerial photo of quarry wall failure looking west. Yellow oasnea ones snow <br />perimeter of rockslide. Red dashed lines are concurrent tension cracks and incipient scarps <br />that opened. Not all tension cracks are marked on photo. White arrow shows location of <br />visible offset of fault. Black arrow shows active bench that was currently being mined.