Well, this way seemed to make money:
Station Manager Sheppard: "Let me tell you what you're dealing with here. I run a franchise. The company hired me to dig as much ore out of this hellhole as possible. My hookers are clean, some of them are good looking. My booze isn't watered. The workers are happy. When the workers are happy, they dig more ore. They get paid more bonus money. When they dig more ore, the company's happy. When the company's happy, I'm happy."
There is one major problem with Moon mining. The only concentrated material of value on the Moon is Helium-3, and it is only potentially useful in fusion reactors that haven’t been built yet, and in hundreds of tons quantities.
The reason other minerals aren’t concentrated enough to mine is simple: no water. Hot water or cold water, it is the solvent essential for concentrating ores enough to mine.