Analysis of information sources in references of the Wikipedia article "Carl J. Johnson" in English language version.
Dr. Carl J. Johnson, a public health official who attacked the Federal Government over the potentially dangerous effects of nuclear weapons testing, died of complications from heart surgery yesterday at Lutheran Memorial Hospital in Lakewood, Colo. He was 59 years old and lived in Lakewood. Dr. Johnson, an epidemiologist and radiation specialist, was the public health director in Jefferson County, Colo., the site of the Government's Rocky Flats Plant, from 1973 to 1981. Rocky Flats, 16 miles northwest of Denver, shapes plutonium into triggers for thermonuclear weapons. The plant opened in 1953.
