We took a lesson from the East-West War and created bunkers and tunnels between cities to escape the eyes of the feds.
For the last thirty years the average increase in the output has been 22% per annum, and that in the exports (including bunkers) 42% per annum.
The cleaned coal is carried by a stream of water to a bucket elevator and delivered to the storage bunkers, or both water and coal may be lifted by a centrifugal pump into a large cylindrical tank, where the water drains away, leaving the coal sufficiently dry for use.
The majority of greens are raised & well protected by bunkers.
One of the wartime guard bunkers can be seen to the right of the entrance.