8,5000 Years of LEAD…
79 Years of LEADED Gasoline
Lead discovered in Turkey.
First significant production of lead.
500 BC-300 AD.
Roman lead smelting produces dangerous emissions.
Greek physicians give clinical description of lead poisoning.
Tetraethyl lead (TEL) discovered by German chemist.
US medical authorities diagnose childhood lead poisoning.
Child lead poisoning linked to lead-based paints.
France, Belgium and Austria ban white-lead interior paint.
Pediatric lead-paint poisoning death from eating crib paint is described.
GM and United Motors buy Charles Kettering’s DELCO, which experiments with preventing engine knock.
Scientific American reports alcohol-gasoline blend can be used as motor fuel.
Thomas Midgley patents benzene/gasoline blend as antiknock.
Du Pont interests buy additional shares of GM.
London General Omnibus Co. experiments prove ethanol is antiknock.
Kettering gives Midgley two weeks to find antiknock.
US Naval Committee approves alcohol-gasoline blend.
Midgley patents alcohol and cracked (olefin) gasoline blend.
Du Pont now owns more than 35 percent of GM.
National Lead Company admits lead is a poison.
Midgley demonstrates car powered by 30 percent alcohol-gasoline blend.
Midgley discovers that tetraethyl lead (TEL) curbs engine knock.
League of Nations bans white-lead interior paint; US declines to adopt.
GM contracts Du Pont to supply TEL.
Public Health Service (PHS) warns of dangers of lead production, leaded fuel.