Sarboy, yes i was meaning Erickson as per the link. i punched my reply into an ipad and didn't check the spelling. I imagine that they would need heavy lift helicopters for more than just the blades if there is no road access. those towers will take a lot of steel and concrete as well, although medium lift machines may work out easier/ better/ more efficient etc during excavation and construction phases.
Depending on the number of the towers you could get a heavy machine based there for the duration.