Evaluating the immense physical scale of deep open-pit geomechanical failures requires examining post-incident structural records and heavy equipment impact assessments. Reviewing the 2013 Manefay landslide at the Bingham Canyon copper operation demonstrates how a multi-phased mass wasting event can displace over 100 million tons of material, overwhelming 95% of the pit floor and crushing heavy production machinery, including high-capacity electric shovels and haul trucks. Analyzing this incident underlines the vital role of multi-layered early warning networks—incorporating interferometric radar, automated prism matrices, and GPS displacement tracking—which successfully forecasted the failure timeline and enabled complete facility evacuation, preventing employee injuries while establishing strategic operational workflows for rapid haul-road re-establishment and conveyor recovery
