BTW: There is a bug base report on this already, but I thought I'd try here in case it wasn't actually a bug and instead its my own ignorance.
I bought 4 mines off the market a few months ago. I went to inspect them to see if I had something worth using or if I'd wasted my money.
1 of the 4 I found to be stuffed to capacity with Meleenium, so it told me I could not get any information about the deposit until some was removed.
The remaining 3 mines had no mined materials in them, but when I went to the Mining/Farming Status screen so I could check on the deposits, I see this:
If this is incorrect, please report this to the bug tracker"
Question 1: When a mine is depleted, does it say its depleted?
Question 2: What exactly should I be looking for?
Question 3: Am I doing something wrong? Mines are managed and operated by me, some are powered, some are not.