SF author Charles Stross has a couple of damning criticisms of He3 mining on the moon, found here: http://www.antipope.org/charlie/blog-static/2010/08/moonshine

SF author Charles Stross has a couple of damning criticisms of He3 mining on the moon, found here: http://www.antipope.org/charlie/blog-static/2010/08/moonshine.html http://www.antipope.org/charlie/blog-static/2010/08/moonshin... In short: Nobody's built any useful (for power generation) fusion reactor yet, much less one running He3. There isn't actually much He3 on the moon, just more than here on Earth. It's doubtful that mining on the moon would be cheaper than just making it here.