So just spent an hour doing surface/sub surface mining, didn't find any core roids so guessing it's a lottery in finding them. But how disappointing are these mining points. Surface provide 1 rock per deposit and sub surface gets you about 2 deposits, not really worth it, especially when mining lasers will provide you with a lot more ore over time. After an hour I had around 10t cargo worth around 70k, using just mining lasers I would probably have a least 500k in cargo within a hour. So I'm guessing only core mining is really worth it at the moment.