Yesterday I placed all SCAPPERS to mine. BOOM!
I was locked out.
Today I got back in, just to find that one of those is not mining.
Seems that actual mine appeared partly under my Lvl7 Improved Warehouse.
Imp.jpg
Now it claims that it is working but also says that Storehouse > Workyard N/A and Overall production time N/A
This might be fixed by destroying that IMP WH but it takes a lot of resources to rebuild it!