For someone interested in the future of the...err...space, what type of technical background is required to be hired today to work at a company with plans to attempt this type of mining?
A lot of current extraction techniques use liquid water (not available on an asteroid), all extraction techniques depend on the raw ore being transportable by buckets or belts with gravity keeping things in place (also not available on asteroids). And many refinement techniques are very energy expensive (challenging to ship to an asteroid). So if you can figure out how to solve even one of those problems and asteroid mining company that hires you will be ahead of the game.