The landslide went off at about 9:30 in the evening on Wednesday, April 11 at Bingham Canyon Mine, about 20 miles southwest of Salt Lake City. It was expected: like most modern mines, Bingham has redundant sensor systems (radar, laser, seismic, GPS) that measure ground movement down to the millimeter and give plenty of warning when a collapse is imminent. The mine was evacuated about 12 hours before the landslide, and nobody was hurt. Slide measure 5.1 on the Richter scale

The lost equipment was worth tens of millions of dollars including these:

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