There are billions of tons of water ice on the poles of the Moon.
Nextbigfuture previously reported on Shackleton Energy in 2011, when they had a crowdfunding attempt.
Shackleton Energy claims its lunar ice program will cost less than one-tenth of the Apollo program, generates revenue within 4 years and breaks even within 12 years. They claim they can make moon mining happen with $10 billion.
The Economist magazine had a feature on the moon mining effort and Bill Stone. Dr Stone founded the Shackleton Energy Company (SEC) to process water on the Earth’s Moon into oxygen and hydrogen for rocket fuel. It can cost around $16,000 per kilo to send supplies like fuel into low Earth orbit. Transporting fuel to the Moon would cost at least five times as much, says Jeffrey Hoffman, a space-flight expert at the Massachusetts Institute of Technology who is familiar with SEC. The ability to produce fuel in space, he thinks, would slash the cost of missions from placing geostationary satellites to interplanetary travel.”