Later on, they discovered that if they hung a roll of roofing felt over one of these fires...
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Later on, they discovered that if they hung a roll of roofing felt over one of these fires on a piece of rope, that would catch alight and eventually the rope would burn through and as the roofing felt fell into the fire, it imitated a collapsing roof
Full Transcript
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Later on, they discovered that if they hung
00:00:03.008 --> 00:00:06.089
a roll of roofing felt over one of these fires
00:00:06.089 --> 00:00:09.048
on a piece of rope, that would catch alight
00:00:09.048 --> 00:00:12.069
and eventually the rope would burn through
00:00:12.069 --> 00:00:15.028
and as the roofing felt fell into the fire,
00:00:15.028 --> 00:00:18.054
it imitated a collapsing roof.
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Movie Summary
During World War II, the British built or reinforced a series of structures consisting of over 26,000 buildings to form a line of defence against an expected German invasion. Rob Bell travels around the UK to learn their secrets.
