from the health departments of Oregon and Washington. In response to an article in the Spokane Spokesman Review in September 1985, the DOE announced it would declassify environmental records and, in February 1986, released 19,000 pages of previously unavailable historical documents about Hanford's operations. The Washington State Department of Health collaborated with the citizen-led Hanford Health Information Network to publicize data about the health effects of Hanford's operations. Their reports concluded that residents who lived downwind from Hanford or who used the Columbia River downstream were exposed to elevated doses of radiation that placed them at increased risk for cancer and other diseases, particularly forms of thyroid disease. A mass tort lawsuit was brought by two thousand Hanford downwinders. In 2005 two of six plaintiffs who went to trial were awarded $500,000 in damages. The DOE resolved the final cases in October 2015, paying out more than $60million in legal fees and $7million in damages. Of the 177 tanks at Hanford, 149 had a single shell. Historically single-shell tanks were used for storing radioactive liquid waste and designed to last twenty years. By 2005 some liquid waste was transferred from single-shell tanks to (safer) double-shell tanks. A substantial amount of residue remains in the older single-shell tanks with one containing an estimated of radioactive sludge, for example. It is believed that up to six of these "empty" tanks are leaking. Two tanks were reportedly leaking per year each, while the remaining four tanks were each leaking per year. In February 2013 Washington Governor Jay Inslee announced that a tank storing radioactive waste at the site had been leaking liquids on average of per year. He said that though the leak posed no immediate health risk to the public, it should not be an excuse for not doing anything. On February 22, 2013, he stated that six more tanks were leaking. Occupational health concerns In 1976 Harold McCluskey, a Hanford technician, received the largest recorded dose of americium following a laboratory accident in the Plutonium Finishing Plant. Due to prompt medical intervention, he survived the incident and died eleven years later of natural causes. Since 1987, workers have reported exposure to harmful vapors after working around underground nuclear storage tanks, with no solution found. More than forty workers in 2014 alone reported smelling vapors and became ill with "nosebleeds, headaches, watery eyes, burning skin, contact dermatitis, increased heart rate, difficulty breathing,