Dec. 10 – On this day in Montana history in 1934 chemist Harold Clayton Urey was awarded the Nobel Prize in Chemistry for his discovery of heavy hydrogen. He is the only University of Montana graduate to ever receive the prestigious honor. During WWII Urey went on to head a team of scientists researching heavy water and other elements for the Manhattan Project that developed the atomic bomb. Most importantly his team found a way to separate uranium 235 from uranium 238.