Big earthmoving equipment, and I mean the BIG stuff are currently all electric. Either diesel-electric like haul trucks or full electric for stuff that moves within a limited range like shovels. There are also haul trucks that operate diesel-electric at the loading end of their cycle and then raise a pantograph to pick up overhead lines when they leave the loading area.
www.e-mj.com/breaking-news/erzberg-breaks-ground-for-haul-truck-trolley-system/
Anglo American and Williams Engineering started development of a H2 fuel cell lithium-ion battery powered haul truck last year.
thedriven.io/2020/02/26/worlds-biggest-electric-dump-truck-to-start-testing-in-africa/
It's been delayed due to CV-19 restrictions but the fuel tank was being completed a few weeks ago.
www.nproxx.com/case-study-hydrogen-powered-mine-truck-for-anglo-american-mine/
Other manufacturers like Komatsu and Caterpillar are starting to move in that direction too.
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Hydrgen powered vehicles new
Hydrgen powered vehicles new