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Günter Wirths was a German chemist who was an authority on uranium production, especially reactor-grade. He worked at Auergesellschaft in the production of uranium for the Heereswaffenamt and its Uranverein project. In 1945, he was sent the Soviet Union to work on the Russian atomic bomb project. When he was released from the Soviet Union, he settled in West Germany, and worked at the Degussa company.
Additional recommended knowledge
Wirths was a colleague of Nikolaus Riehl, who was the director of the scientific headquarters of Auergesellschaft. Auergesellschaft had a substantial amount of “waste” uranium from which it had extracted radium. After reading a paper in 1939 by Siegfried Flügge, on the technical use of nuclear energy from uranium,  Riehl recognized a business opportunity for the company, and, in July of that year, went to the Heereswaffenamt (HWA, Army Ordnance Office) to discuss the production of uranium. The HWA was interested and Riehl committed corporate resources to the task. The HWA eventually provided an order for the production of uranium oxide, which took place in the Auergesellschaft plant in Oranienburg, north of Berlin. It was this that got Wirths involved with the production of uranium metal, which Auergesellschaft did for the Uranverein project of the Heereswaffenamt.  
In the Soviet Union
Near the close of World War II, as American, British, and Russian military forces were closing in on Berlin, Riehl and some of his staff moved to a village west of Berlin, to try and assure occupation by British or American forces. However, in mid-May 1945, with the assistance of Riehl’s colleague Karl Günter Zimmer, the Russian nuclear physicists Georgy Flerov and Lev Artsimovich showed up one day in NKVD colonel’s uniforms.  The use of Russian nuclear physicists in the wake of Soviet troop advances to identify and “requisition” equipment, materiel, intellectual property, and personnel useful to the Russian atomic bomb project is similar to the American Operation Alsos. The military head of Alsos was Lt. Col. Boris Pash, former head of security on the American atomic bomb effort, the Manhattan Project, and its chief scientist was the eminent physicist Samuel Goudsmit. In early 1945, the Soviets initiated an effort similar to Alsos (Russian Alsos). Forty out of less than 100 Russian scientists from the Soviet atomic bomb project’s Laboratory 2 went to Germany, Austria, and Czechoslovakia in support of acquisitions for the project.
The two colonels requested that Riehl join them in Berlin for a few days, where he also met with nuclear physicist Yulii Borisovich Khariton, also in the uniform of an NKVD colonel. This sojourn in Berlin turned into 10 years in the Soviet Union. Riehl and his staff, including their families, were flown to Moscow on 9 July 1945. Wirths either flew out with Riehl or was later sent to join Riehl in Russia as a member of his group. Eventually, Riehl’s entire laboratory was dismantled and transported to the Soviet Union.   
From 1945 to 1950, Riehl was in charge of uranium production at Plant No. 12 in Elektrostal'. German scientists, who were mostly atomic scientists, sent by the Soviets, at the close of World War II, to work in the Riehl group at Plant No. 12 included Alexander Catsch (Katsch), H. J. Born, Ortmann, Przybilla, Herbert Schmitz, Herbert Thieme, Tobein, Günter Wirths, and Karl Günter Zimmer. 
Three major technological upgrades were made at Plant No. 12 in the production metallic uranium, two of them involved Wirths as a principle driving force:
For their work at Plant No. 12, in contribution to the Soviet atomic bomb project, Wirths and Thieme were awarded a Stalin Prize, second class, and the Order of the Red Banner of Soviet Labor, also known and the Order of the Red Flag.  
Return to Germany
Typically, many of the German scientists who worked on the Russian atomic bomb project were in the Soviet Union for about 10 years. For the last two or three years, they were quarantined by being sent to facilities where only unclassified work was done. When Wirths was released from the Soviet Union, he fled to West Germany and took a job at Degussa as an authority in the production of reactor-grade uranium. 
Wirths spoke English as was featured in the 1988 NOVA television program Nazis and the Russian Bomb. In the program, Manfred von Ardenne was also featured; he was a German physicist who directed Institute A in Sukhumi. In the documentary, Wirths told a story about the purity of Plant No. 12’s production of uranium. Through espionage, the Soviets has procured a specimen of American uranium and compared it to that at Plant No. 12. The Soviet leaders praised the purity of Plant No. 12’s uranium production. Wirths, indicated that the Americans probably determined had optimized production output by allowing the purity to be less stringent, and said Plant No. 12 was probably “over doing it,” to which one of the Soviet leaders responded, “You damned Germans!”
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Günter_Wirths". A list of authors is available in Wikipedia.|