The Alkborough Flats was used as a bombing range during WW2. A number of airfields used the range, although it was mostly used by British crews based at RAF Elsham Wolds. The range consisted of a chalk marker and two observation posts positioned on a ridge overlooking the target.
There was a massive expansion of RAF Bomber Command and an influx of American bomber squadrons during the conflict. Consequently, many of these simple ranges were hastily established in the UK as temporary training grounds.
Wartime RAF Practice Bombs
RAF WW2 practice bombs are one of the most frequently encountered UXO types in the UK. They are often exhumed at historic Allied military airfields and former bombing ranges.
These devices were small, relatively insignificant and therefore any that did not function as designed were often not retrieved.
The flash type practice bombs contain a 1lb spotting charge. Although small, it is nevertheless an explosive and therefore potentially dangerous. The fill comprises a mixture of gunpowder and magnesium. On detonation, a brilliant white flash occurs.
In July 2017, Brimstone Site Investigation recovered 15 practice bombs during a Search and Clear operation at the former RAF Hucknall airfield.