Monument record 0805000000 - Outside Henderson Mess, RAF Halton, Halton

All the shelters are of an 'Anderson' type. The main structural elements are a rough concrete floor above which are set conjoined curved corrugated iron sheets. The 'chamber' created by sheets measures 8m by 2.95m and has a central height of 1.7m. The rear of the chamber contains an escape shaft to the surface set in the middle of the roof. The square shaft is formed of a reinforced iron collar surrounded by cement. Access to the escape hatch from within the shelter was provided by a simple iron ladder bolted to the side of the escape shaft collar. On the surface a simple iron hatch cover that was either lifted up from above or pushed up from below covered the shaft. The depth of ground above the shelters was 0.80m [B1].
World War II air raid shelter, still extant to east of Grove and Henderson Barracks (B2).