That was years before Mauro smoked his own
And in Missouri, industry giant Reynolds American Inc.*, contributed nearly $13 million in support of a legislative initiative to raise the states meager taxes by only 60 cents
Araya J, Tsubouchi K, Sato N, Ito S, Minagawa S, Hara H, Hosaka Y, Ichikawa A, Saito N, Kadota T, Yoshida M, Fujita Y, Utsumi H, Kobayashi K, Yanagisawa H, Hashimoto M, Wakui H, Ishikawa T, Numata T, Kaneko Y, Asano H, Yamashita M, Odaka M, Morikawa T, Nishimura SL, Nakayama K, Kuwano K (2019) PRKN-regulated mitophagy and cellular senescence during COPD pathogenesis
This is because they would breathe in the black coal dust and over many years more and more accumulates in their lungs and their lungs become blacker.