Mining in space will have to start off on a very small scale, automation will play a fundamental role in making this happen. First thing with any mining operation will be the location, using geological surveys to find rich deposits of useful commodities like Iron, Titanium, Anorthite, Silicon dioxide, Chromium, Manganese, Calcium and Sodium oxides, Sulfur, Hydrogen and Oxygen. The Moon Regolith is rich in all these materials and thanks to billions of years of micrometeorites is ground to a fine powder.