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Posts by ChrisJC

Showing 736 results below:

Author Message
Topic: Geology / drainage patterns - Talyllyn valley
ChrisJC

Forum: General Chat   Posted: 21/09/2020 10:01:20   Subject: Geology / drainage patterns - Talyllyn valley
Maybe the arrangement of the Dysynni has been repeated in the past.
Previous moraines have permitted rivers to flow across the valley for extended periods before subsequent glaciations have deepe
Topic: Geology / drainage patterns - Talyllyn valley
ChrisJC

Forum: General Chat   Posted: 21/09/2020 08:49:05   Subject: Geology / drainage patterns - Talyllyn valley
[quote="BertyBasset"]I wonder though if the Bala Fault wasn't actually reflected by a valley until glaciation. So you could have three rivers crossing the fault at altitude, then glaciation digs it ou
Topic: Geology / drainage patterns - Talyllyn valley
ChrisJC

Forum: General Chat   Posted: 19/09/2020 12:41:44   Subject: Geology / drainage patterns - Talyllyn valley
I made an observation about the rivers and valleys around the Talyllyn valley whilst looking at Bryneglwys. At this point any connection with mining ends, but maybe somebody on here knows about geolog
Topic: Ardda Sulphur Mine
ChrisJC

Forum: North Wales   Posted: 17/09/2020 19:40:04   Subject: Ardda Sulphur Mine
I was out with Mr. Down and Beyond this evening, so I mentioned it to him in case he doesn't see it.

Chris.
Topic: Prince Edward Gold Mine (mine)
ChrisJC

Forum: North Wales   Posted: 16/09/2020 08:50:42   Subject: Prince Edward Gold Mine (mine)
Personally I would go to Rhosydd. It's a nice walk up to it (weather depending!), and you can have a good poke about inside without the need for any gear. If you're brave, you can climb out of the Twl
Topic: Lead ingot from wreck
ChrisJC

Forum: New recruits!   Posted: 14/09/2020 14:55:32   Subject: Lead ingot from wreck
Is there not a missing letter (judging from the spacing) - PO?NTPRAN

I suggest the letter I would fit quite well.

Chris.
Topic: Bug on Lead Mine maps
ChrisJC

Forum: Site Updates, Suggestions & Corrections   Posted: 14/09/2020 11:00:09   Subject: Bug on Lead Mine maps
I have been alerted to the fact that there are too many lead mines to show on a map!
If you search for all lead mines (A-Z) it gives you an error "Uh oh, too many mines to show on a map (2183), t
Topic: Look at This Bad Boy
ChrisJC

Forum: Midlands   Posted: 08/09/2020 17:38:56   Subject: Look at This Bad Boy
[quote="Paul Marvin"]https://www.ebay.co.uk/itm/114132350741


Is that not cool or what guys ![/quote]

The local mine explorers still use them in the Forest of Dean.

Topic: Collapse in Gilfach
ChrisJC

Forum: North Wales   Posted: 28/08/2020 12:08:16   Subject: Collapse in Gilfach
[quote="TwllMawr"]Btw, I came across a personal artefact of someone’s close by one of the adits. If whoever owns it would like it back somehow please pm me with a description. [/quote]

Almo
Topic: Collapse in Gilfach
ChrisJC

Forum: North Wales   Posted: 28/08/2020 10:10:42   Subject: Collapse in Gilfach
What you'd be stood on might go with it, so worth remaining on the rope!

I look forward to hearing how it goes...

Chris.
Topic: Collapse in Gilfach
ChrisJC

Forum: North Wales   Posted: 28/08/2020 09:19:06   Subject: Collapse in Gilfach
I think you could help it on it's way. If you abseiled down from the steps, you can look underneath the stacked deads onto the top of all of the hanging death. I reckon if you lobbed a few boulders on
Topic: Collapse in Gilfach
ChrisJC

Forum: North Wales   Posted: 28/08/2020 07:06:48   Subject: Collapse in Gilfach
Nice. Yes, those pictures illustrate the problem pretty well!

Chris.
Topic: Muscles in a mine.
ChrisJC

Forum: General Chat   Posted: 27/08/2020 15:57:38   Subject: Muscles in a mine.
I was expecting a thread about how strength can be used advantageously with SRT and clambering up stopes etc.

Muscles / mussels !

Chris.
Topic: Collapse in Gilfach
ChrisJC

Forum: North Wales   Posted: 23/08/2020 10:14:40   Subject: Collapse in Gilfach
Morning All,
A select few elite mine explorers tried to make the through trip at Gilfach (Cwm Pennant) yesterday.
However they were thwarted by what appeared to be a recent collapse in the
Topic: Croesor approach road
ChrisJC

Forum: North Wales   Posted: 19/08/2020 15:19:45   Subject: Croesor approach road
It's also not a road...

Chris.
Topic: Gas Monitors
ChrisJC

Forum: Exploration Chat   Posted: 15/08/2020 14:28:33   Subject: Gas Monitors
Thanks for the input all. I shall look at the Altair 4x and see what the options are.

Chris.
Topic: Gas Monitors
ChrisJC

Forum: Exploration Chat   Posted: 14/08/2020 13:14:07   Subject: Gas Monitors
Good Afternoon All,
It is likely that I will soon be exploring places for which having a Gas Monitor would be sensible. They are Ironstone, so I believe the general problem is oxidation of the i
Topic: Back underground ????
ChrisJC

Forum: General Chat   Posted: 14/08/2020 10:35:01   Subject: Back underground ????
I wouldn't say normal, but I have been out!

Chris.
Topic: Hidden BBC Wales Drama
ChrisJC

Forum: North Wales   Posted: 13/08/2020 07:59:00   Subject: Hidden BBC Wales Drama
[quote="Paul Marvin"]Yep that looks so bad as said why not use a real one[/quote]

It's quite an atmospheric setting - perhaps they couldn't find a real one set in the right environment.
Topic: Fellows lamps forum.
ChrisJC

Forum: Lamps & Lighting   Posted: 11/08/2020 19:35:57   Subject: Fellows lamps forum.
[quote="davel"]New battery for Roy's lamps?

https://www.theguardian.com/environment/2020/aug/11/powerhouses-nanotechnology-turns-bricks-into-supercapacitor-batteries

I'm not sure
Topic: Bryneglwys
ChrisJC

Forum: Mid Wales   Posted: 31/07/2020 11:22:19   Subject: Bryneglwys
[quote="JonK"]Can't remember? you were the the youngest person on that trip. If you carry on this way you will end up like somebody else we know.

Seriously, your good self and the King of
Topic: Bryneglwys
ChrisJC

Forum: Mid Wales   Posted: 21/07/2020 12:26:47   Subject: Bryneglwys
My memory is a bit vague since visiting in 2009.

We entered 15B, and descended to floor 25. Then we crossed the valley underground, and somehow got out on the Cantrybedd side. I imagine we
Topic: Bryneglwys
ChrisJC

Forum: Mid Wales   Posted: 20/07/2020 09:54:03   Subject: Bryneglwys
Worth noting that the suggestion in the PDF to buy a book from Sara Eade is problematic as I believe she has died.

Chris.
Topic: East Midlands
ChrisJC

Forum: Midlands   Posted: 06/07/2020 14:11:23   Subject: East Midlands
It does depend. I got some old maps from the Northamptonshire Record Office, and the cheeky buggers had put their own copyright notice on there!

Naturally I got that sorted out!

Topic: Bryn Eglwys.
ChrisJC

Forum: North Wales   Posted: 30/06/2020 16:15:55   Subject: Bryn Eglwys.
I can't remember what is in the waterfall entrance. I have an idea that it doesn't go.

But I do know you can traverse the valley from the Cantrybedd side to the Bryneglwys side although the
Topic: Photography in caves
ChrisJC

Forum: Underground Photography & Video   Posted: 25/06/2020 20:25:45   Subject: Photography in caves
11,200 lumens.

Yes please, given the lousy subject material, it's come out quite well! I wouldn't mind a copy for the Mrs to throw brick-bats at.

Chris.
Topic: Photography in caves
ChrisJC

Forum: Underground Photography & Video   Posted: 25/06/2020 15:10:44   Subject: Photography in caves
[quote="royfellows"][quote="ChrisJC"]You have to give a little bit of credit to the camera in the phone too.

Chris.
[/quote]

Meeow[/quote]

:lol::lol:Credit where
Topic: Photography in caves
ChrisJC

Forum: Underground Photography & Video   Posted: 25/06/2020 13:48:53   Subject: Photography in caves
You have to give a little bit of credit to the camera in the phone too.

Chris.
Topic: Biggest-ever Tanzanite Crystals
ChrisJC

Forum: General Chat   Posted: 25/06/2020 11:31:53   Subject: Biggest-ever Tanzanite Crystals
Here too:
https://www.bbc.co.uk/news/world-africa-53148612

I love how (by our standards) humble he is. And how he is going to spend his money doing things we take for granted (and ofte
Topic: Parc Lead Mine - 3D
ChrisJC

Forum: North Wales   Posted: 21/06/2020 20:42:07   Subject: Parc Lead Mine - 3D
Very good.

Where did you get the survey data from?

Chris.
Topic: Photography in caves
ChrisJC

Forum: Underground Photography & Video   Posted: 16/06/2020 21:13:58   Subject: Photography in caves
[quote="Deuande"]Hi all. How can I take a picture in a cave and have it come out perfect? I don't want to use the flash.[/quote]

With a LOT of practice!

Chris.
Topic: Glyn Rhonwy 'Earth Centre'
ChrisJC

Forum: North Wales   Posted: 09/06/2020 15:59:34   Subject: Glyn Rhonwy 'Earth Centre'
[quote="50shadesofgreen"]I've read that the collapse in the covered munitions section was thought to be due to cracks seen in the concrete and the weight of the 40ft protective layer of broken slate a
Topic: Glyn Rhonwy 'Earth Centre'
ChrisJC

Forum: North Wales   Posted: 08/06/2020 13:48:07   Subject: Glyn Rhonwy 'Earth Centre'
[quote="SimonRL"]
I may be on the verge of being a grumpy old man; but I don't know of a single local who has got a job out of all this. Just a lot of money (public and private) spent on red herr
Topic: Glyn Rhonwy 'Earth Centre'
ChrisJC

Forum: North Wales   Posted: 08/06/2020 09:24:45   Subject: Glyn Rhonwy 'Earth Centre'
[quote="Blober"]Ultimately, can anyone explain what the end purpose will be? I can't for the life of me work out what it actually will be.

Its all well and good creating a few jobs, but the
Topic: Glyn Rhonwy 'Earth Centre'
ChrisJC

Forum: North Wales   Posted: 07/06/2020 16:19:05   Subject: Glyn Rhonwy 'Earth Centre'
Grumpy old men aside, if money is going to be poured into the project (even grant money), that means spending locally. Creating jobs?, improving the area?, and hey, it might even be a successful ventu
Topic: Back underground ????
ChrisJC

Forum: General Chat   Posted: 11/05/2020 14:03:53   Subject: Back underground ????
I am going to stay at home for a bit longer (fortunately I have plenty of space at home). I'll let all the 'enthusiasts' rush out, catch the lurgy, become ill, get better, then I'll consider going out
Topic: the largest U/G mine " space " // cavity " - in UK ?
ChrisJC

Forum: General Chat   Posted: 05/05/2020 18:04:40   Subject: the largest U/G mine
For natural, I would think Titan or The Time Machine in Daren Cilau have to be contenders.

And just about any of the slate quarries will have incalculably large voids if you add it all up.<
Topic: Free money for clubs with huts
ChrisJC

Forum: General Chat   Posted: 02/05/2020 21:44:28   Subject: Free money for clubs with huts
I hear a fair bit of complaining here - are we saying that the lockdown should be abandoned?

Chris.
Topic: In a study, scientists have found traces of lead, transported on the winds from British mines that operated in the late 1100s.
ChrisJC

Forum: General Chat   Posted: 31/03/2020 09:18:13   Subject: In a study, scientists have found traces of lead, transported on the winds from British mines that operated in the late 1100s.
I remain to be convinced I have to say.

Correlation does not mean causation and all that.

I wonder if they have teased out other effects too.

Chris.
Topic: What’s the strangest thing you’ve found?
ChrisJC

Forum: General Chat   Posted: 26/03/2020 18:45:20   Subject: What’s the strangest thing you’ve found?
Second strangest thing I've found (in 1996-1997 in Parc Mine, Gwydyr), was bits of paper with warnings / instructions on. Signed RF.

I leave the first strangest thing as an exercise for the
Topic: Last shift at the George & Charlotte
ChrisJC

Forum: General Chat   Posted: 24/03/2020 19:52:05   Subject: Last shift at the George & Charlotte
This all has an air of finality about it.

Will you not re-open when this current pandemic is over?

Chris.
Topic: Places to stay and eat at, near mines, that you would hate to lose in the current apocalypse.
ChrisJC

Forum: General Chat   Posted: 22/03/2020 08:16:36   Subject: Places to stay and eat at, near mines, that you would hate to lose in the current apocalypse.
[quote="rikj"]
I think that's what the central banks have been doing via quantative easing since the 2008 financial crash. Difference is, this time the money is going direct to the workers, who w
Topic: Places to stay and eat at, near mines, that you would hate to lose in the current apocalypse.
ChrisJC

Forum: General Chat   Posted: 20/03/2020 20:55:27   Subject: Places to stay and eat at, near mines, that you would hate to lose in the current apocalypse.
[quote="Tamarmole"]
I imagine they will start printing money; it work well enough in Germany in the 1920s.[/quote]

They will:
https://en.wikipedia.org/wiki/Modern_Monetary_Theory<
Topic: Going to say the dreaded " cave " word
ChrisJC

Forum: South Wales   Posted: 05/03/2020 11:08:22   Subject: Going to say the dreaded
[quote="Wormster"]In Bridge cave main chamber (just before the sump) in the wall is a phreatic tube filled with loose fill and rocks that looks as if its heading into the sandbanks area of L.N.R.C. it
Topic: Going to say the dreaded " cave " word
ChrisJC

Forum: South Wales   Posted: 05/03/2020 07:07:30   Subject: Going to say the dreaded
[quote="Paul Marvin"]Yes we have been in Little Neath and loved it although the water was VERY high and LL one and Two,both through the hole in the wall and the Dive. Do you know anything about the ot
Topic: Going to say the dreaded " cave " word
ChrisJC

Forum: South Wales   Posted: 04/03/2020 18:13:00   Subject: Going to say the dreaded
You can try Daren Cilau if you are 'ard enough! Or Agen Allwedd.
If you can navigate the politics, Ogof Draenen.
Little Neath River Cave is one of my favourites, and the entrance will be ri
Topic: CATMHS - The Mine Explorer - 40 Years
ChrisJC

Forum: General Chat   Posted: 04/03/2020 18:08:37   Subject: CATMHS - The Mine Explorer - 40 Years
The book is drawn from the newsletters over the course of the history of the society. References are in the text, and the newsletters (except the last 3 years worth) are freely downloadable from the C
Topic: CATMHS - The Mine Explorer - 40 Years
ChrisJC

Forum: General Chat   Posted: 29/02/2020 12:11:48   Subject: CATMHS - The Mine Explorer - 40 Years
Nice. I hope you enjoy it!

Chris.
Topic: CATMHS - The Mine Explorer - 40 Years
ChrisJC

Forum: General Chat   Posted: 29/02/2020 08:33:51   Subject: CATMHS - The Mine Explorer - 40 Years
All,
A few people have enquired after copies of the CATMHS journal "The Mine Explorer - Forty Years of Exploration, Research and Conservation".
CATMHS members received a free copy, but ther
Topic: 3W Cree torches in Tesco's
ChrisJC

Forum: Lamps & Lighting   Posted: 16/02/2020 20:52:35   Subject: 3W Cree torches in Tesco's
[quote="royfellows"]You make a very good point.
I have often wondered why no 18650 Li Ion powered torches or cells anywhere except on the web?

Its mad.

Tony, my "Roy on torc
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