Two separate locations, as follows:
1) Hazard Mine, Dirtlow Rake, Castleton.
Anybody descended shaft, levels off, condition of shaft, depth.
Access permission?
2) Slaley Sough, Via Gellia - Internal shaft: 151ft deep.
Again, anybody been down, levels off, condition. In CofPD it says, 151ft blind shaft.
I was thinking of examining both shafts, using remote filming equipment.
Thanks!

Hazard - a few people have been down it in recent years AFAIK, if we're talking about the engine shaft it's a good 300ft deep and "interesting" further down so I've been told. I don't know about who you'd get permission off, TSG would probably be the best people to ask.

Slaley - the CoPD info will have been taken from Roger Flindall's article in Bulletin 4:6, I presume he descended it around then. Blind and dropping into water with no levels off as I understand.

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Regarding the shaft in Slaley Sough/Bonsall Leys Level described in the article that I wrote, we did not descend it. I have heard of more than one descent and all said that it was blind to water at about 150 feet. This is confirmed by the mining records of its sinking.

I believe a team has been surveying and photographing Hazard, but have had problems with high levels of co2.
The shaft is open but there is no permission! it is also unlikely the landowner would welcome any approach, as he was stopped from spreading paper pulp, due to the pollution it was causing to the Peak Cavern system. I believe there was a 1830 survey produced?
I hope this helps? Jim.

I'd be interested in comparing notes with the high CO2 experienced cavers.

I am familiar with all sorts of atmospheres, including low O2 with no CO2 and lots of CO2. I'd like to discuss what their experience was, how they figured it was CO2 and whether they underwent the same horror as my team.

I have been in low O2 to the point of tunnel vision and pixellated vision and it wasn't that bad. The high CO2 was utterly terrifying.

Atmospheres interact with humans in a complex way, I'm in the process of making sense of it.

Sorry to go OT. :offtopic:

Thanks for information guys, appreciated. :thumbup:

I believe the team were using Gasman co2 monitors and had a level 1 alarm 15 meters down the main ( engine) shaft followed by a level 2 alarm on the Cartgate ? On the level 2 alarm sounded the team withdrew.

A couple of knowledegable people were quite suprised by this result, as it implies that, like Nettle Pot, the system is now mostly sealed except for the main entrance. I think the climbing shaft entrance was buried during the last opencasting - I certainly haven't managed to find it, despite having a reasonable idea where it should have been.

Makes me wonder if it was the backfilling after the opencasting that's plugged any other ventilation holes there might have been. With Hollandtwine being totally buried too, that was probably the last remaining good draught in the place snuffed out.

I've been in low O2 and high CO2 situations, as I've mentioned before on here, and the CO2 was far worse for me too, especially with a tight 50m prussik to complete. That was in Nettle, at the very bottom, and I haven't had much impetus to go back since. The level at the entrance shaft base was fine, but the lack of a draught seems to be the real issue down there.

If only the crawl through the bedding to Oxlow could be completed - there wouldn't be as many issues then, though the bottom of the system would still be pretty isolated. That said, the only draught I could detect on that day down there was coming up from 'Hell' - i.e. even deeper than we were. But if it was a CO2-rich draught, that's not much help!