Gettler discovered that the TEL and its lead by-products form a recognizable distribution pattern, concentrating in the lungs, the brain, and the bones. The highest amounts were spread through the lungs, indicating that most of the poison had been somehow inhaled; later tests showed that the masks used by Dupont and Standard Oil did not filter out the lead in TEL vapors. Rubber gloves did protect the hands, but if TEL splattered and made any direct contact with the skin, it was absorbed extremely quickly. A few months after his press conference, Thomas Midgley Jr. left for an extended European
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