Halton Brat is totally correct in his assessment of the strength of the Fiberglass copy of the old 1950s tin hat as one of the JT's on the Missile Servicing Flight at West Raynham that I worked with did the same but tried to make it really lightweight. The Mk 1 one version looked the biz, until he showed it off to some mates in the queue at the exercise mess on the missile site in the middle of a Minieval and one of them said 'God, this is really light', flexed it a bit and the thing broke in half (and guess that item the helmet designer didn't have to hand at work, the original
). Anybody on here do that NBC trial at Honington in 87???