As long as we are talking about machinery, I also got to tour the Red hill Coal Mine near Ackerman, MS. They have some BIG stuff.
A P & H 2800, 40 cubic yard, electric shovel uncovers the top seam of lignite.
The shovel loads the material into Caterpillar 785 and 789 off-highway end dump trucks.
A Marion 8200, 82 cubic yard dragline uncovers the fifth and sixth seams of lignite. The machine operates on 23,000 volts of electricity, weighs 8 million pounds, and has a boom that is 325 feet long and 175 feet high. Its base measures 65 feet in diameter, moves via walking shoes that are 13X65 feet, and walks 7 feet per step or 1/8th mile per hour. The dragline completes a digging cycle in one minute and has 7,500 horsepower.
A Huron Easi-Miner and the CAT 5230 excavators are used to load the lignite into end dump trucks.
Other equipment pics.
Lignite is then delivered to a 400 ton capacity hopper. A crusher and conveyor crushes and transports the lignite to the power plant. All the coal mined here goes to the power plant located next to the mine.