steven lester, is a toxicologist with nearly 40 years of experience helping people in contaminated communities find answers. it's probably no coincidence that many of these communities, many of these cancer clusters that we see, many of the industrial clusters that exist in this country today happened to be around. and in the midst of communities of color, we track down some of the men who used to work in the chris and facility at that real yard during the 1960 seventy's and eighty's. how many of you have health problems that you think were caused by korea? so i had it took a tumor, you long lung cancer. i'll find out on the 17 of this month. well i have a prostrate cancer. my. so what was it like working there? terrible smell. it smells we get in this man. we go back home with chris. oh, they're strong. they would burn your skin, you know, in the summer time you know. yeah, real burn on. if it hit your skin, it would mix it, it would make where the water dripping water. it would mixing without i've got to go, but of water fountain hindering the water. if in the water it was real. don't you kn