[PAR] [TLE] Norwegian heavy water sabotage [SEP] The Norwegian heavy water sabotage (Bokmål: "Tungtvannsaksjonen" , Nynorsk: "Tungtvassaksjonen" ) was a series of operations undertaken by Norwegian saboteurs during World War II to prevent the German nuclear weapon project from acquiring heavy water (deuterium oxide), which could have been used by the Germans to produce nuclear weapons.  In 1934, at Vemork, Norway, Norsk Hydro built the first commercial plant capable of producing heavy water as a byproduct of fertilizer production.  It had a capacity of 12 tonnes per year.  During World War II, the Allies decided to remove the heavy water supply and destroy the heavy water plant in order to inhibit the German development of nuclear weapons.  Raids were aimed at the 60 MW Vemork power station at the Rjukan waterfall in Telemark, Norway. [PAR] [TLE] German nuclear weapon project [SEP] The German nuclear weapon project (German: "Uranprojekt" ; informally known as the "Uranverein"; English: Uranium Society or Uranium Club ) was a scientific effort led by Germany to develop and produce nuclear weapons during World War II.  The first effort started in April 1939, just months after the discovery of nuclear fission in December 1938, but ended only months later due to the German invasion of Poland, after many notable physicists were drafted into the "Wehrmacht".
[PAR] [TLE] Norwegian heavy water sabotage [ SEP ] The Norwegian heavy water sabotage ( Bokmål : " Tungtvannsaksjonen " , Nynorsk : " Tungtvassaksjonen " ) was a series of operations undertaken by Norwegian saboteurs during World War II to prevent the German nuclear weapon project from acquiring heavy water ( deuterium oxide ) , which could have been used by the Germans to produce nuclear weapons . In 1934 , at Vemork , Norway , Norsk Hydro built the first commercial plant capable of producing heavy water as a byproduct of fertilizer production . It had a capacity of 12 tonnes per year . During World War II , the Allies decided to remove the heavy water supply and destroy the heavy water plant in order to inhibit the German development of nuclear weapons . Raids were aimed at the 60 MW Vemork power station at the Rjukan waterfall in Telemark , Norway . [PAR] [TLE] German nuclear weapon project [ SEP ] The German nuclear weapon project ( German : " Uranprojekt " ; informally known as the " Uranverein " ; English : Uranium Society or Uranium Club ) was a scientific effort led by Germany to develop and produce nuclear weapons during World War II . The first effort started in April 1939 , just months after the discovery of nuclear fission in December 1938 , but ended only months later due to the German invasion of Poland , after many notable physicists were drafted into the " Wehrmacht " .
What group was tasked with making nuclear weapons in April of 1939, and was sabotaged by the Allied Nations in World War II?
What group was tasked with making nuclear weapons in April of 1939 , and was sabotaged by the Allied Nations in World War II ?
The German nuclear weapon project
The German nuclear weapon project