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Radon has been around for billions of years. It is inside earths crust because of the disinigration of radium which is decayed uranium.
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Martin Klaproth discovered uranium.
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W.C. Roentgen discovered the x-ray.
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antoine-henri becquerel discovered the ore pitcheblende.
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Radon was discovered by Marie and pierre curie inside the ore pitchblende.
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Friedrich Ernst Dorn discovered Radon.
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Uranium was mined from the late 1890 to 1910 for the sole purpose to extract Radium. Utah, [Colorao, New Mexico, Arizeona]
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Marie Curie won the nobel prize in 1911 for researching isolating mettalic radium.
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From 1912-1920 most of the mined Uranium was sent to pennsylvania because it was used at a Standard Chemical Company for Radium Production.
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An American B-29 bomber dropped the worlds first atomic bomb over the Japanese city of Hiroshima.
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The new goal was to obtain Uranium-235 and plutonium.
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The Climax Uranium company started to produce a high-grade uranium product to sell for nuclear weapons to be made.
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In 1956 Hultqvist began researching radioactivity inside buldings. From the years 1930-1975 most swedan buldings and homes were built with aerated concrete which contained high amounts of radium-226.
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Uranium mining greatly increased up until 1979 when it took a drastic fall from 9,076 to 448 in 1986.
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By the year 1987 all 50 states were informed about radon. All states had some kind of state wide program to inform their people about radon.
