Division of Radiology. Th.e Division of Radiology opened on January 1, 1926, with Miss Minnie Hollingsworth, R. N., as the sole personnel. The equipment at this time consisted of a tilting-table fluoroscope, a mobile X-ray unit which is still being used by the hospital, and an ordinary examining table. The members of the House Staff did their own fluoroscopic examinations and interpretation of films until the arrival of Dr. Stafford L. Warren in April. The volume of work soon became too much for Miss H<.llingsworth alone so that Mr. William Hill was employed as radiographic technician.
https://www.facilities.rochester.edu/history/MC/1936FirstDecade.pdf
A requirement that large military equipment be X-rayed led the University and several local companies to build a million volt X-ray machine that opened in January 1943 in a new building on the north side of Elmwood Avenue, next to the University’s Central Utilities Plant. Dr. Stafford L. Warren, professor of radiology, headed up that project and in February 1943 he was recruited by General Leslie R. Groves to join the secret Manhattan Project that was developing atomic weapons.. An addition to the X-ray building (known as the ‘B’ section) was opened in September 1943 and another structure (‘C’) was added in early 1944. A third floor was added to the south wing during the 1950s..
The Manhattan Project was transferred to the new Atomic Energy Commission on January 1, 1947 and continued its work at the University, building a Cyclotron on River Campus in 1947 and the O Wing in 1950, which included a new tunnel under Elmwood Avenue to connect that building to the east end of the Annex building.
The buildings were later cleaned of radiation and transferred to the University, where now house laboratory and office space.
The building contained an animal crematorium that was shut down and its chimney was removed in October 2023.
One of the last remaining remnants of the Atomic Energy Program is this cart that is still used by facilities. It is not known if it glows in the dark.