This is well worth reading, even though it,s quite long. In brief it,s about how lead in petrol was all done for corperate profit whilst covering up the risks, and all the backhanded deals, misinformation and threats that went with it.
https://docs.google.com/viewer?a=v&q=cache:x_ykR60cQ9oJ:www4.hmc.edu:8001/Chemistry/Pb/resources/secret%2520history%2520of%2520lead.pdf+&hl=en&gl=uk&pid=bl&srcid=ADGEESg3zCcsRd8rFfhYxOPkL1Kq_Pnq2clDj_p6-QGuTs7G3h47IB8Y0VwqNjhGLh20vnCRQAlFNr3-ziGdPEPXwZvrIX7TUne_1labAiCAL-ubyNg9DB_a2yoa1WHZvRKwd0-dPWxH&sig=AHIEtbRXrayIZ9IGPtRRyo_uUC3XNge5xQ
"You,re only supposed to blow the bloody SLIDING doors off"
https://docs.google.com/viewer?a=v&q=cache:x_ykR60cQ9oJ:www4.hmc.edu:8001/Chemistry/Pb/resources/secret%2520history%2520of%2520lead.pdf+&hl=en&gl=uk&pid=bl&srcid=ADGEESg3zCcsRd8rFfhYxOPkL1Kq_Pnq2clDj_p6-QGuTs7G3h47IB8Y0VwqNjhGLh20vnCRQAlFNr3-ziGdPEPXwZvrIX7TUne_1labAiCAL-ubyNg9DB_a2yoa1WHZvRKwd0-dPWxH&sig=AHIEtbRXrayIZ9IGPtRRyo_uUC3XNge5xQ
"You,re only supposed to blow the bloody SLIDING doors off"