where did matthias schleiden do his work?
University of Tartu
entailment
 Because of the isolation of the site , known as the Hanford Engineer Works , Matthias exercised more administrative autonomy than the Manhattan Project 's other area engineers . The number of personnel assigned to his office grew to over 500 in 1944 . Construction work commenced on the 400 @,@ 000 @-@ acre ( 160 @,@ 000 ha ) site in April 1943 . The size of the construction work force eventually reached 44 @,@ 900 in June 1944 ; over 150 @,@ 000 workers were employed at the site between 1943 and 1946 . 

entailment
 A graduate of the University of Wisconsin – Madison , Matthias joined the Tennessee Valley Authority ( TVA ) as a Junior Hydraulic Engineer in 1935 , and worked on hydroelectric projects . In April 1941 , he was called to active duty by the United States Army , and joined the Construction Division of the Army Corps of Engineers . He was area engineer at the Manhattan Project 's Hanford site from 1942 to 1945 . As such , he supervised the enormous construction effort which included three chemical separation plants so large that they were known as " Queen Marys " , and the world 's first three production @-@ scale nuclear reactors . 

entailment
 The first production batch of uranium slugs were dissolved at the separation plant on 26 December 1944 , and in January 1945 Matthias personally couriered the first batch of plutonium nitrate to Los Angeles , where he handed it over to another courier , who took it to the Los Alamos Laboratory . Plutonium from Hanford would be used in the Fat Man bomb used in the bombing of Nagasaki . For his wartime services , he was awarded the Distinguished Service Medal . 

entailment
 On 1 August 1933 , Matthias married Reva Baumgarten , a fellow graduate of the University of Wisconsin , who taught speech therapy in schools in Beloit , Wisconsin . In 1935 he was hired by the Tennessee Valley Authority ( TVA ) as a Junior Hydraulic Engineer , and worked on hydroelectric and hydraulic problems and on construction , planning and plant design . He left the TVA in 1939 , and spent a year working with a contractor on dredging the Tennessee River . In 1940 and 1941 he worked for the A. L. Johnson Construction Company , and on tunnels and aqueducts for the Dravo Corporation . 

contradiction
 Christ in Gethsemane – portraying Christ praying in the Garden of Gethsemane , surrounded by trees made of stippled glass . 
