Great info and pictures!. Thanks for sharing those.

How is the lead sorted out when the rubber base is filled up?. Some type of sorting machine?
I watched the process at a State run outdoor range when they came and sifted out the giant dirt berms and put the lead in 55 gal steel containers. What a job!. They were there for over a week doing 2 rifle ranges and a handgun range. Very efficient operation though.