on the topic of heavy metals. Take a look at the weather mod regulations. You can basically put anything in cloud seeding juice and just say "custom compound" on thereport. also the switch to "green" jet fuels means that the "green" additives are not regulated the same as past substances. Hint some fuel made with plant material and no testing for phosphates. You can see the effects of the poisoned air on the west coast mountain ranges where the trees are dying on the ridges from metal contam.