The heavy trucks used in the mining industry are almost entirely electric. If a truck is going underground, much better for it to not be spitting fumes that will kill your workers, and if the mine is at the top of a hill, the regenerative braking from a loaded truck going downhill will charge the batteries so much that the trucks rarely, if ever, have to be manually charged.
Some of the trucks in question: https://www.komatsuamerica.com/equipment/trucks/electric
