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A different kind of landscaping project needed.
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Ty Gwyn



Joined: 22 Sep 2010
Posts: 4407
Location: Lampeter
PostPosted: Sat Jan 23, 21 6:22 pm    Post subject: A different kind of landscaping project needed. Reply with quote
    

https://youtu.be/DzwW6irR5O4

Nick



Joined: 02 Nov 2004
Posts: 34498
Location: Hereford
PostPosted: Sat Jan 23, 21 7:04 pm    Post subject: Reply with quote
    

Where’s this? Looks messy.

Ty Gwyn



Joined: 22 Sep 2010
Posts: 4407
Location: Lampeter
PostPosted: Sat Jan 23, 21 7:13 pm    Post subject: Reply with quote
    

Skewen near Neath,not far from the A465 junction off the M4.

dpack



Joined: 02 Jul 2005
Posts: 39851
Location: yes
PostPosted: Sat Jan 23, 21 8:35 pm    Post subject: Reply with quote
    

toxic and a surprise from the middle of a road.nasty.

i met one of those in south yorks, but it did it in a field rather than a housing estate, a lot of fishing line and a lead did not find the bottom of it when it had stopped flowing

Ty Gwyn



Joined: 22 Sep 2010
Posts: 4407
Location: Lampeter
PostPosted: Sat Jan 23, 21 8:44 pm    Post subject: Reply with quote
    

This one is down around 350ft to the nearest working seam according to the plans.

dpack



Joined: 02 Jul 2005
Posts: 39851
Location: yes
PostPosted: Sat Jan 23, 21 9:06 pm    Post subject: Reply with quote
    

plugging the thing might be a bit difficult, random scrap metal and marine set would be my first thought, but it would need a lot

a "lid" may be optimistic if it could go sideways

very bad luck for the folk who live there.

Ty Gwyn



Joined: 22 Sep 2010
Posts: 4407
Location: Lampeter
PostPosted: Sat Jan 23, 21 9:36 pm    Post subject: Reply with quote
    

Latest info on this shaft is was abandoned 1881,shaft down roughly 350ft to seam,then workings rising under the mountain,no info regarding extent of workings,so maybe no definite plans,but with possibility of far extent of workings being at a higher OD than the surface of shaft could explain the force of water exiting.
Having been in old workings with oxidisation,the inside of them homes are in one hell of a mess,it would be like getting into a bath of tomato soup with ones cloths on.

Mistress Rose



Joined: 21 Jul 2011
Posts: 12843

PostPosted: Sun Jan 24, 21 8:51 am    Post subject: Reply with quote
    

Nasty. At least here ground water tends to be clean. We drink it out of the taps.

dpack



Joined: 02 Jul 2005
Posts: 39851
Location: yes
PostPosted: Sun Jan 24, 21 9:42 am    Post subject: Reply with quote
    

",it would be like getting into a bath of tomato soup "

i dont think i would trust you in the kitchen

fe2+, fe3+, assorted organics some of which are quite nasty, probably various oxidation states of sulphur, probably significant traces of metals, perhaps a few traces of radio active things and whatever pH that mix gives

tomato soup, even from a can, would be a delight a few feet deep in the house compared to that sort of mix

a different and deliberate drainage one down by the old (derelict) canal near barnsley jets vertically from an open bore pipe, it is oddly clean looking but smells like a volcano and kills the vegetation

unless it can be blocked or diverted those houses might be history not homes

in better mine news some chinese fellas have been extracted after a couple of extra weeks on shift and the wrong side of a collapse, half are still missing but at least some are safe.

rescued

i have only once been the wrong side of a big chunk of stone, it was deliberate as there seemed no other way to remove it in a rather tight pinch point of a wormhole
it was planned, my chums had explicit instructions including pumping air to me if it took too long to break it up for removal but in a small chamber with several hundred kilos of gritstone between me and the vertical exit was a little tense
ER are lightweights so far, lock on is one thing, that stuff is hardcore

deliberately getting "stuck" underground and intending to "passively" resist rescue can be a bit interesting at times

Slim



Joined: 05 Mar 2006
Posts: 5993
Location: New England (In the US of A)
PostPosted: Mon Jan 25, 21 1:04 am    Post subject: Reply with quote
    

Someone forgot to turn off the chocolate milk spigot?

Mistress Rose



Joined: 21 Jul 2011
Posts: 12843

PostPosted: Mon Jan 25, 21 7:55 am    Post subject: Reply with quote
    

Any further news on that Ty Gwyn? It is going to take some sorting out by the looks of it.

Ty Gwyn



Joined: 22 Sep 2010
Posts: 4407
Location: Lampeter
PostPosted: Mon Jan 25, 21 11:48 am    Post subject: Reply with quote
    

Nothing much on the news,except the water flow has eased and the colouring has virtually cleared showing the bulk of water has exited and now its the old workings draining.
An older map i`ve seen puts this old shaft at a higher position than the BGS shows,thus shows they worked a higher seam the Upper Maesmelyn/Swansea 2ft seam at 60ft from surface as well as the lower seam at a greater depth,but its this higher seam i would imagine has caused the problem as to the right of these workings is a major fault also near enough on the line of the fault is a brook coming down the valley giving the possibility of the workings breaching the brook,whether at the time of working or over the years since,so more possibilities to investigate.

dpack



Joined: 02 Jul 2005
Posts: 39851
Location: yes
PostPosted: Mon Jan 25, 21 1:35 pm    Post subject: Reply with quote
    

9 dead. 1 still missing

any rescued was good.

Slim



Joined: 05 Mar 2006
Posts: 5993
Location: New England (In the US of A)
PostPosted: Mon Jan 25, 21 1:43 pm    Post subject: Reply with quote
    

Yikes, so that wasn't just a gradual emergence.

I know you've got layers of history built on layers of history, but the possibility of old mine shafts causing havoc in a populated area is a little hard for me to get my head wrapped around.

dpack



Joined: 02 Jul 2005
Posts: 39851
Location: yes
PostPosted: Mon Jan 25, 21 2:06 pm    Post subject: Reply with quote
    

in my home town in west yorks the college relocated, selling the site has been rather difficult as 70ft under it is a large water filled chamber from an unmapped mine C1795-1805 that was abandoned due to water

it is not considered a mining town but has a few near surface and valley side drift seams that were exploited pre 1820 or so, maybe 200 drifts and pits, the coal is not good for engine use so became useless by then and few are properly mapped and recorded

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