I did a little more searching and came up with this info:
Apparently new EPA rules did shut down our only lead smelter FOR IRON ORE. There are 3 others, all much larger, who re-smelt lead and have many times the capacity of the only one doing lead from ore. It’s a tragedy that miners will probably be out of work, and of course those who worked at this plant, but don’t worry about enough lead around to make bullets. We are OK, and all ammo will not be imported going forward. Besides, California has already banned ammo with lead (idiots) but many makers are manufacturing bullets with copper/alloyed materials only, no lead, except perhaps a trace in the copper that makes it machinable.