Career
In 1930, Kroupa and Friedrich Hecht analyzed a sample of radioactive rock from the Huron Claim, Manitoba near Winnipeg, Canada. The team determined the sample to be over 1,725,000,000 years old. Kroupa emigrated to the United States in the 1950s.
According to United States Customs records, on 3 June 1953, Editha Karl-Kroupa, age 43 and Hugo Karl, age 43, arrived at New York City, New York, and listed a local address as the Hotel Almac on Broadway and 71st Street in New York City.
The couple embarked from Bremerhaven, Germany on 26 May 1953 aboard the USNS General Alexander M. Patch (T-Associated Press-122) and traveled in Cabin Class. They arrived in New York on 3 June 1953 and presented Austrian passports to United States Customs officials.
The couple traveled with 6 pieces of baggage. Kroupa worked as a chemist in the Inorganic Chemicals Research Division for the Company, in Dayton, Ohio, where her research focused on phosphates.
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