Recently bought some mines off the market and I am looking into using them with the help of a mining group, however, I want to investigate how large the deposits are before I officially make a deal over running the mines. No sense in wasting both my time and the miner's time if there's only 5 units of a deposit left.

I'm at the mine's Building Management.
The mine has been given power (had been unpowered for several months).
I am both Manager and Operator of the mine.

I click the 'Actions' button, next 'Mining/Farm' then Status...all I see is
"Message:
If this is incorrect, please report this to the bug tracker"

I try the 'Reports' button, and I don't even get that message.

The only other option is Add NPCs and I know I don't want that.

So, am I doing something wrong? Is it because I'm not in a mining group that I can't get this info?