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A comment on Balloon detects first signs of a ‘sound tunnel’ in the sky. Parent comment

Re:Balloon detects first signs of a ‘sound tunnel’ in the sky by revolvingocelot on Thursday April 28, 2022 @02:52PM (#31196649)
FWIW the now-silent Windsor Hum seems to have been a (particularly ill-maintained) steel plant on Zug Island, across the Detroit River.

https://windsor.ctvnews.ca/infamous-windsor-hum-finally-dies...

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