Yep, and all I am saying is to manintain and operate constructiion equipment is very expensive.
I've worked in the widerness on the construction of the Tranalaska pipeline and have worked as an explosive foreman running a crew for many years working across Washington State and I've seen first hand the beating construction equipment take and know its a huge cost factored into a companies over head cost. Working in the wilderness of Alaska isn't cheap, the cost pile-up fast.