690 MT Rock Crusher Moved

Mammoet moved a 690-metric-ton (mt) granite rock crusher and primary conveyor inside the A.R. Wilson Quarry in Aromas, California, USA. Both pieces of equipment needed to be relocated from the top of the quarry to the new location downhill and 1,200 meters (m) away. Owner Graniterock previously attempted to drive the rock crusher, Mammoet reported. The crusher experienced a loss of braking power and the operation could not be completed safely. Mammoet proposed to move the crusher in one piece on SPMTs and received the contract.
The route included an intermittent 8%-10% grade and, after several days of rain, mud. The 152-m primary conveyor, broken down into four sections, went fi rst. The rock crusher followed, with a total travel time of less than two hours. The entire operation was completed on schedule and with zero incidents, despite the weather, Mammoet reported.
The crusher was active until just hours before the move, which signifi cantly reduced downtime. The quarry dates back to 1900. With the crusher moved, another 100 years of operation is expected.

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