Thread by @jeff_kaye

"British work on anthrax, or "N"... led in 1943 to design of an "N" bomb suitable for mass production by the Americans... [It] weighed 1.8 Kg (4 lbs). 106 of these "bomblets" were to be packed into a 225 Kg (500 lb) cluster-bomb canister & dropped over enemy population centers."

"The whole effort was protected by the highest level of secrecy, TOP SECRET:GUARD.... An initial pilot batch of 5,000 N bombs was produced at Camp Dietrich in May 1944, and medium-scale production at a rate of about 50,000 bomblets a month followed."

"The bomblets were turned over to the British, who stockpiled them.
The plant at Vigo, Indiana, was designed for production of 500,000 anthrax bombs per month. The plant was never put into operation, partly because of extreme concerns over its safety."

"By the end of the war, it had been converted to antibiotic production, though it could have easily been converted back to bioweapons manufacture if the need had arisen."
cia.gov/library/abbott…

Seems much of the info in this document comes from "Construction & Operation of New US Army Medical Research Institute of Infectious Diseases Facilities & Decommissioning and Demolition And/or Reuse of Existing USAMRIID Facilities at Fort Detrick, Environmental Impact Statement"

Link for the USAMRIID Environmental Impact Statement: play.google.com/store/books/de…

Proof the US "experimental fragmentation bomb for anthrax" came from Japanese input ("drawn from sketch submitted by Lt. Gen. Shiro Ishii")
books.google.com/books?id=PQsAA…