Kentucky Minstrels

The Kentucky Minstrels were a team formed under the leadership of Duncan Bruce to study a scheme during World War II to cover the River Thames with soot in order to conceal it from German Bombers.^[1]

Work began on the Thames in a craft inappropriately named H.M.S. Persil.

References

1. ↑ Pawle, Gerald (1957). The Secret War 1939-45. p. 188.