I started this thread about MY specific problem and I posted picture there about it, problem being one shard mine that can not be mined.
Seems that I was also affected from game loading bug but that was NOT my main issue!
My issue is the fact that some of those mines have been placed to area where originally is mountain and it would be safe spot.
But those mountains/rocks can be removed leaving that spot for mine open for building, and I have built there.
Attachment 7676 Attachment 7677
Now that mine is not working because is says "Storehouse > Workyard N/A" meaning that it can not be mined.
Solution is NOT to move that Improved Warehouse (that was tested in Test server).
Solution is actually very simple; that mine placement needs to be adjusted to area where it is safe.