There are 3 mines on Manhattan; is that correct?
Based on the info if you click into them, likely no. I would have expected them to be incidental materials from tunneling, but reading the description that's not the case.
Quarries?
alt Hacker News
Based on the info if you click into them, likely no. I would have expected them to be incidental materials from tunneling, but reading the description that's not the case.