Always have to throw this in there when I see articles about lead exposure:
Tetraethyl lead (TEL) is still being manufactured in the UK, and being sold in a handful of countries for consumer gasoline use. One company in the world manufactures the material. It's an easy lookup. They've openly said they won't stop manufacturing the material until they're forced to by government intervention.
Leaded fuel is still being used in aviation as well, even in countries where it has been banned for road use. The primary aircraft that require leaded fuel are small, personal use aircraft. You're being poisoned so some rich bastards can play in their toys.