Two contrasting open-cast coalmines in America use some of the largest machines of their kinds to be found anywhere.
At the Belle Ayr mine, Gillette, Wyoming, one of the world’s biggest electric shovels, the P&H 4100XPB, is removing overburden above the coal seams.
It dwarfs the Caterpillar 797B haul trucks it loads, even though these are the largest mechanically driven trucks in the world.