I found this forum after google searching about this crash. I built the power plant at the mine this plane crashed at. I received quite a bit of freight off of this aircraft during construction last summer. The strip is much longer than the 1500 feet stated here. C-130's landed 30+ times while I was there last summer. The rock pile on the south end is a problem, that said, Hercs, DC-6's, DC-4's land there frequently. I have some photos of the crash of the DC-4 earlier this year that was en route to the mine. I've attached them to this post. I will get photos of the Carvair eventually, I will be sure to share them here.
-Ben