How efficient is iron smelting ?
I don't think it is NASA you have to convince....
Project Orion was technically feasible, but nobody was crazy about the fallout generated.
and who would supply the bombs? North Korea?
I've been looking at the soil analysis from the pathfinder data and it would appear that the *Average* iron oxide content is not much different than that of earth soil. Your assumption concerning the soil analysis may be flawed.