. >> berkes: danny smith is just 47 yea old. he mined coal only 12 years, but he's desperately sick. >> are you ready, sissy? >> yeah. >> well, let daddy turn his oxygen off and i'll get my stuff ready and we'll go. (grunts, coughs) s started getting shortnes breath around 2007, 2006. i could tell a differein just the things that i was doing around here. >> do you want me to get thi >> the oxygen? yeah, i ed it. and in 2012, i believe it was, they'd done a ct scan, and they seen all the spots on my lungs. they said, "it's black lung. lyou're eat up with blackg." that put me in the hospital. i had 30-some pounds of fluid on me, on my lungs. i'm not feeling good today, baby. didn't sleep good. i was scared. it was tough on all of us, because my wife was scared that i was dying, and i was scared, that i was dyid i was. (clears throat, coughs) t can you tut oxygen on back there? just pull that little green handle. just pull it, like, towards you. (clears throat) there we go. now i gotta get it on my face. (chuckles) i think about al