Once we had taken the tiles off from around the bulkhead and broken some of the concrete up with the 3 jack hammers we had carried over the fence, we realised that the only way we were going to get it out was with angle grinders or cutting gear. The sengar saw would have cut through the iron work underneath like a hot knife through butter, but we didn't have it! There was actually quite a gap under the bulkhead between the back of it and the concrete. We actually ran out of time that night, we considered going back the next night but we couldn't be sure our handy work wouldn't have been discovered the next day. We considered long and hard getting oxyacetylene and going back but we were aircrew and none of had the expertise to use it, we would either have blown ourselves up or totally wrecked the bulkhead, so we returned empty handed. We would love to have seen OC 617's face on Monday morning when no one could get in the crewrom, as we had nailed it shut from the inside and climbed out through the skylight.
Ivor