I met a guy today who I later learned works at a very large police training center.
In the course of our conversation he mentioned they had built a huge outdoor range several years ago but now they cannot use use it due to the environmental contamination caused by all the lead bullets. Now they do all their shooting at an indoor range. He mentioned they load out three cubic meters (almost 4 cubic yards of empty handgun brass every two to three months. I asked what they do with all the brass and lead hoping I could get an angle on some of one or the other or both. The brass is all sent to a remanufacturer but the lead "is too hazardous" so it is sent to an abandoned mine where it is buried deep underground.
In my mind I can't imagine the volume of lead required to result in three cubic meters of fired brass handgun cartridges. Each bullet would weigh significantly more than the case in which it was loaded. It is beyond my mental capabilities.
Also beyond my comprehension is the underground disposal. I am sure this facility (funded by taxpayers) is paying for the "safe disposal" of all this lead but even selling the lead at $0.25/pound to China or a scrapyard or a bullet caster would be better than burying it all.