Mysterious recurring noises annoy residents of Salford, Manchester, UK

What are these mysterious recurring noises annoying residents of Salford, a metropolitan borough of Greater Manchester?

The unexplained noises are loud, grating clanks lasting for a couple of seconds at a time but repeated every 15-20 minutes.

This video was recorded by Scott James at around 3:30am on March 29, 2016. According to the uploader, it was really loud, mechanical, lasting only 10-20 seconds and coming from the Eccles area about every two minutes.:

This second recording was made by Paul Boon on March 29, 2016 at 3:39am.

Finally, in this last video, the sound was recorded @ 1:20 :

Official news websites are lost and write:

Over the past week we have been contacted by numerous readers being woken in the early hours of the morning by unusual mechanical sounds.

There’s loud, grating clanks lasting for a couple of seconds at a time but repeated every 15-20 minutes.

Then there’s the sound of gas under pressure – possibly being released.

The earliest they’ve been heard is around 2am, and the latest at around 4am, in Weaste, Seedley and areas around Salford Royal hospital, but also as far away as Swinton and MediaCityUK.

Salford City Council said their Environment team had received multiple complaints in the last seven days about early morning noise, but that inspectors had not been able to trace what was causing such sounds.

But the source of the noise has been impossible to pin down.

“Every time we heard the noise you could feel the vibrations through the house,” said one Grange Street resident.

Constructions? Gas venting from machinery at Salford Royal hospital’s A&E department?One local resident who lives on Stott Lane says he’s been hearing the same sound “for years”.

“The hospital always deny it but myself and my elderly neighbours are sick of it, it’s very loud and no-one owns up to it.

The sound certainly appears to be different to that of Manchester’s Beetham Tower famously ‘howling’ in the wind:

Freacky… What could that be…

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