 to determine the concentration of arsenic, barium, calcium, cadmium, cobalt, chromium, copper, iron, manganese, mercury, nickel, lead, selenium, strontium, vanadium, and zinc. And by the way, some of these things are not hard. You know, like zinc, almost massive amounts, not a problem. But there's some baddies here. Cadmium, mercury, lead, nickel. Well, here are the results. We found measurable concentrations of all 16 metals assessed.