Declassified UFO / UAP Document

Transmittal of Reports on Mine Detectors and Ghost Bombs

🏛 FOA 📄 correspondence

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TL;DR

A 1946 Swedish military document transmitting technical reports on mine detectors and a 'ghost bomb' observation. It highlights the involvement of engineer Jan Wennerberg in the research.

This document is a formal transmittal letter from the Swedish National Defence Research Institute (Försvarets Forskningsanstalt, or FOA), Department 2, dated August 16, 1946. It is addressed to the Defence Staff (Försvarsstaben), specifically the Air Defence Department and the Military Staffs. The letter serves to forward two specific documents: a protocol detailing comparative sensitivity measurements between British mine detectors (No. 3 and No. 4) and a Swedish magnetic mine detector, and a report concerning the observation of a 'ghost bomb' (spökbomb). The letter notes that civil engineer Jan Wennerberg, who was previously employed by KAFT/KtrB and worked with fire control instruments for air defence, is associated with the provided information. The document is marked 'HEMLIG' (Secret).

Vidare bifogas en rapport angående iakttagelse av "spökbomb".

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