Dated 1939, the caption to this photograph reads: "Member of Royal Dutch Navy demonstrates the Belgian version of how to defuse a sea mine."
And, for the intellectual equivalent, on Thursday 30 September we have Geoffrey Lean hosting an "Age of Energy" event at The Daily Telegraph offices, where you can pose your question to a panel of energy experts including Secretary of State; Chris Huhne, TV Presenter; Philippa Forrester, Shell Chairman; James Smith, Leading academic; Professor Gordon Mackerron and WWF Chief Executive; David Nussbaum.
Marginally, the winner of the Brain Trust goes to the Belgian, so the chances of you getting anything out of this event are a tad remote.
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