INFORMATION: I was part of the RAF Bicester Bomb Disposal Flight that did a clearance job in the old bomb dump here in 1965. Gravel extraction was under way and wartime munitions kept turning up so we were called in and spent most of the summer there. An old pond within the BD area provided a few tons of assorted munitions. We pumped the pond empty but there was around 3 feet of mud left so we used a bit of kit that had lain in the store for years unused. The Millers sludge pump. This single cylinder engine powered unit had a rocking beam that operated a large rubber diaphragm pump that was capable of sucking up and squirting out half bricks so it had no trouble with 20mm ammo! Peter Hamlin