Interview: Diamandis' Planetary Resources To Claim High Value Asteroids With Robotic Beacons

Once Planetary Resources has figured out how to get to an asteroid and how to mine it--what will they mine? Near-Earth asteroids contain abundant iron, nickel, platinum group metals, and water. If space is to be the "final frontier," we'll need to live off the land--and asteroids are a low gravity (in other words, cheap) way to harvest materials.