Did you realize

stewey | 16:28 Sun 19th Apr 2009 | ChatterBank

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....that there are certain things that we hope to God will function when we need them, but have no really practical way of testing them prior to that need. For example: parachutes, air-bags in cars, portable fire extinguishers. bullet-proof vests, sprinkler systems in buildings.....any more?

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Pssssstttttt......

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DEN53

safety harness when abseiling down a building ?

a goal for manu or eve - not fussy but lets have one goal at least!

stewey

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That brings up another one, Den. The resurfacing mechanism on a submarine.

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