“You should see this one!”
Linked as a sight of a huge excavator; the commenter adds facts.
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You should see this one! this video It's a bit dated (completed in 1978) and cost approximately $100 million. At one point it was the heaviest land vehicle, clocking in at 13,500 tons. It's since been succeded, but this bucket-wheel excavator needed only five people to operate. Those five people could mine 240,000 tons of coal[8] or 240,000 cubic metres of overburden (rock/soil on top of the coal) per day . That's 2400 coal wagons! After totally tapping out all of the coal at the Tagebau Hambach mine, in 2001, it took a crew of 70 together to move it 14 miles to the next mine. This move cost 15 million German Marks. (Just watch the linked documentary.)