State geologist Ed Murphy, left, and state paleontologist John Hoganson pose with fossils and erionite rocks Thursday, April 9, 2009 in Bismarck, N.D. Murphy and Hoganson were exposed to erionite, an asbestos-like mineral similar to a kind linked to cancer in lab rats and in people in Turkey. They have volunteered for a government-funded study to see if the mineral has caused them any ill-effects. (AP Photo/James MacPherson)(AP Photo/ James MacPherson)
Read the article: Lack of volunteers delays study of asbestos-like mineral's effects
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