Coal is excavated by power shovels and loaded into haul trucks.
The operation runs via contract mining, with a fleet of five haul trucks and two production drill rigs.
Caterpillar 777 A 80 tonne (100 st) rigid-frame off-road haul truck.
This configuration allows the operator to follow behind haul trucks and load continuously.
The 930E was the first haul truck to employ an AC electric alternator.
The largest, highest payload capacity haul trucks are referred to as "ultra class" trucks.
It is projected to take 40,000 long haul trucks off Long Island roads and handle 1 million tons of freight a year by 2016.
General Motors developed the 33-19 "Titan" in response to the need for more efficient haul trucks by open pit mine operators.
It is the largest articulated haul truck offered by Caterpillar; larger trucks use a rigid frame system.
The huge haul trucks, which can weigh up to 450 tonnes, require a much larger wheel chock that itself will weight almost 40 kilograms.