re: #59 Anymouse 🌹🏡😷

RE: Japanese balloon bombs:

“…The Military Geology Unit (MGU) of the U.S. Geological Survey was tasked with investigating the small handfuls of sand occasionally recovered from the various crash sites.
…….snip………
Further detailed study of pre-war Japanese geologic studies allowed them to narrow the source area by 80%. They determined that the sand samples likely came from either of two locations: a northerly site along the great beach at Shiogama, close to Sentai, Japan; and/or the Ninety-nine League Beach at Ichinomiya, Japan.

The work of the MGU conclusively identified northeastern coastal Japan as the source area for the sand ballast, and the likely point of launching. Once these locations were revealed detailed photo reconnaissance were made of the areas in early 1945 and the photo interpreters succeeded in identifying two of the three plants producing hydrogen for the project in vicinity of Ichinomiya. These plants were conclusively destroyed by American B-29 bombers based in the Mariannas Islands in April 1945, putting an end to the vengeance bomb project.
web.mst.edu