(Doug's?) video featuring low oxygen?

[Philip Scott]

Quick question.

Is anyone able to point me in the direction of a Youtube vid - made by, or featuring Doug (I think) where a caver goes ahead of the guy with the 4-gas, only for the 4-gas to sound just at the entry to where the caver has disappeared? I recall it being pretty emotional.

If anyone can find the link..... Diolch.

[Doug Thompson]

That was one of Ian Adams videos should find it on his you tube thing or ask him for a link.

[Ian A]

It was an "unexpected" turn of events .....



https://www.youtube.com/watch?v=qbnMwTi-BN8

[Steve]

On a serious note. Has anyone looked into an emergency recovery/evacuation air tank?  
I’d be interested in taking the 4gas down the milwr too

[Doug Thompson]

If you go south with the 4gas you had best take ear defenders too.

[mick murphy]

tunnel south end has low oxygen levels when water levels are low otherwise rest of tunnel has good air flow due to 6 shafts open, 3 at height  above 700ft above sea level and 3 lower down below 600ft therefor creating
downdraughts and updraughts.

[Les Williams]

And an HSE meter alarms at around 19% when down to 14% is OK(ish) and not fatal until below 12%

[Philip Scott]

Marvellous. Thank you all. Have had an acquaintance asking about exploring somewhere that sounded a bit sus on the air quality front, and this is one of the better films I've seen which show the helplessness of the situation.

[mike leahy]

Probably a bloooody coal mine knowing you

[Philip Scott]

Hahaha funny you say that....

[mike leahy]

I know you to well Phil