In the early 1980s, DuPont, which ran a sprawling chemical plant called Washington Works in nearby Parkersburg, approached [Jim Tennants'] family about buying some acreage for a landfill. DuPont assured them it would only dispose of non-toxic material. They agreed to sell. In the mid-1990s ... the family began finding dead deer. The cattle started going blind, sprouting tumors, vomiting blood. Family members were being hospitalized for breathing problems and chemical burns. Convinced that the landfill was to blame, the Tennants tried unsuccessfully to get help from environmental agencies, [and eventually sued] DuPont [with the help of attorney] Rob Bilott. In August 2000, Bilott came across a single paper that mentioned ... C8, [which] is found in thousands of household products. The judge in the Tennant case eventually forced DuPont to turn over thousands of documents on C8. And that's when the picture finally snapped into focus. The documents revealed that DuPont had used the landfill near the Tennants' farm as part of an increasingly elaborate cover-up. After discovering C8 in [the nearby town] Lubeck's water supply in the early 1980s, DuPont had dredged up 14 million pounds of C8-laced sludge from the unlined pits near the town wells and dumped it into the Dry Run landfill. But the C8 levels in Lubeck's water kept climbing. To hide this ... DuPont devised a testing method that grossly underestimated C8 levels.