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Daily Mail

The World's longest echo 7:12
Trevor Cox, an acoustics expert from England, has smashed the world record for the longest echo. The teacher of acoustic engineering at the University of Salford in Manchester recorded the sound of a gunshot echo that lasts a full 75 seconds. The echo
Oil tank in Scotland sets record for the world's longest echoDaily Mail
Now we've heard it all: Acoustic scientists shatter the world record for The Independent
New world record for longest echo set near InvergordonBBC News
Huffington Post UK
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