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Posts by John Lawson

Showing 880 results below:

Author Message
Topic: Wheal Owles - New Poldark Series
John Lawson

Forum: South West England   Posted: 26/03/2015 19:32:35   Subject: Wheal Owles - New Poldark Series
The iron rungs of ladders would be replaced by copper, in water carrying copper ions.
Once this has happened the rate of rusting will increase dramatically, as the, iron's electrons are passed to
Topic: Life of a lithium ion battery?
John Lawson

Forum: Lamps & Lighting   Posted: 26/03/2015 19:23:19   Subject: Life of a lithium ion battery?
Thanks for the obvious Roy!
The point I was making is that other than small lithium ion cells, these batteries seem to have an extraordinary long life.
I was hoping that either you or Simon
Topic: Life of a lithium ion battery?
John Lawson

Forum: Lamps & Lighting   Posted: 25/03/2015 19:34:05   Subject: Life of a lithium ion battery?
The Lithium ion battery I am referring to was an FX ion battery/lamp made by SPLEO TECHNICS. As far as I can see it seems to still have a good life. The main draw back was its poor connection to the O
Topic: Life of a lithium ion battery?
John Lawson

Forum: Lamps & Lighting   Posted: 24/03/2015 19:34:41   Subject: Life of a lithium ion battery?
I bought my first miners lamp powered by a lithium ion batter some 10 years ago.
I replaced it for normal use because it's contacts were rather poor. Never the less it keeps on working, my questi
Topic: Nenthead Car Park - new neighbours
John Lawson

Forum: North West England   Posted: 14/03/2015 20:58:45   Subject: Nenthead Car Park - new neighbours
Thanks for the information guys.
As you said Nick, hopefully the guy willl succeed and as it is in his interest to keep the buildings in a good state of repair it should be good news.
I just
Topic: Nenthead Car Park - new neighbours
John Lawson

Forum: North West England   Posted: 13/03/2015 20:07:32   Subject: Nenthead Car Park - new neighbours
Peter I am guessing that this might be the market gardener, that Nick, Robert & I met up on site a couple of months ago?
He seemed a nice chap, complained that C.C.C. had not taken either his of
Topic: Tynedale Lead & Zinc Co Area plan 1882
John Lawson

Forum: North West England   Posted: 11/03/2015 19:25:20   Subject: Tynedale Lead & Zinc Co Area plan 1882
Thanks Dickie for up loading this plan.
As I mentioned on a previous thread, this particular version has part of the upper Weardale mining area added onto it.
Other versions, stop at the Co
Topic: 25 inch Barmasters Maps of Derbyshire
John Lawson

Forum: General Chat   Posted: 26/02/2015 19:20:15   Subject: 25 inch Barmasters Maps of Derbyshire
Taking up Dickie's point on the Tynedale Lead & Zinc Mining plan of 1882.
This is an excellent plan, there are a few different sources around.
My first copy came from the late Arthur Roberts
Topic: 25 inch Barmasters Maps of Derbyshire
John Lawson

Forum: General Chat   Posted: 21/02/2015 21:06:11   Subject: 25 inch Barmasters Maps of Derbyshire
Looking at this topic from afar! Well done Dickie for even contemplating reproducing these maps on the site. As has already been related maps have a habit of 'walking' by themselves and becoming 'lost
Topic: Effect of earthquakes on mine workings
John Lawson

Forum: General Chat   Posted: 16/02/2015 19:16:09   Subject: Effect of earthquakes on mine workings
I think the biggest recorded event of an earthquake on mines is that of the Lisbon earthquake. It took place in the middle of the eighteenth century, and its effects were recorded by Derbyshire mine v
Topic: Old Gang - Hard Level - Query for those who know this mine
John Lawson

Forum: North East England   Posted: 13/02/2015 20:20:25   Subject: Old Gang - Hard Level - Query for those who know this mine
I agree with Peter hence my response.
Topic: Old Gang - Hard Level - Query for those who know this mine
John Lawson

Forum: North East England   Posted: 12/02/2015 20:54:28   Subject: Old Gang - Hard Level - Query for those who know this mine
Hard level should only be entered by experienced mine explorers!
There are no sumps accessible between Old Rake vein and the level entrance.
Surface water, it is assumed, pours down into Har
Topic: Ruhrthaler Loco at Rampgill Level entrance (photo)
John Lawson

Forum: North East England   Posted: 12/02/2015 19:35:44   Subject: Ruhrthaler Loco at Rampgill Level entrance (photo)
Peter, I have had another thought about the abandoned locos in the Rampgill Mill in the 1950's.
As we all know, Kingsley, suggested as part of the war effort, the re-working of the Nenthead/Barne
Topic: Ruhrthaler Loco at Rampgill Level entrance (photo)
John Lawson

Forum: North East England   Posted: 11/02/2015 19:17:06   Subject: Ruhrthaler Loco at Rampgill Level entrance (photo)
Peter are you sure about the Nentsberry loco?
As understood it all haulage there used horses, and indeed in the Beamish picture archive there is a photo of a horse pulling a waggon out of the ent
Topic: Ruhrthaler Loco at Rampgill Level entrance (photo)
John Lawson

Forum: North East England   Posted: 11/02/2015 19:17:05   Subject: Ruhrthaler Loco at Rampgill Level entrance (photo)
Peter are you sure about the Nentsberry loco?
As understood it all haulage there used horses, and indeed in the Beamish picture archive there is a photo of a horse pulling a waggon out of the ent
Topic: Ruhrthaler Loco at Rampgill Level entrance (photo)
John Lawson

Forum: North East England   Posted: 10/02/2015 19:54:55   Subject: Ruhrthaler Loco at Rampgill Level entrance (photo)
As RJV posted, the plate is no 53 in the two Arthur's book. The caption underneath, the picture is instructive, basically it states that this locomotive was used to pull waggons on surface, because of
Topic: Sharnberry Lead Mine
John Lawson

Forum: North East England   Posted: 09/02/2015 21:06:28   Subject: Sharnberry Lead Mine
Assuming you are where I think you are, then the wire, as usual in these mines is a signalling wire for the tubs.
Before the tubs were sent in or out the wire is pulled to ring a bell to indicate
Topic: Ruhrthaler Loco at Rampgill Level entrance (photo)
John Lawson

Forum: North East England   Posted: 09/02/2015 20:54:27   Subject: Ruhrthaler Loco at Rampgill Level entrance (photo)
Great photo and deductions.
Have been away for a couple of weeks and arrived to find the best cover on a CAT journal, ever!
It is a VM picture of Nenthead, has it been up loaded to the site
Topic: 50 Years of Lead Mining in the Pennines
John Lawson

Forum: General Chat   Posted: 26/01/2015 19:23:12   Subject: 50 Years of Lead Mining in the Pennines
Thanks for info Yorshire exile!
Topic: Dissertation help
John Lawson

Forum: General Chat   Posted: 26/01/2015 19:12:48   Subject: Dissertation help
The obvious previous, location, was the Pelton wheel at the bottom of Brewery shaft, where enough electricity was made to power the mill, and I think free street lighting for Nenthead.

I th
Topic: Secondary copper mineralization
John Lawson

Forum: South West England   Posted: 24/01/2015 19:11:22   Subject: Secondary copper mineralization
As I have mentioned in other threads iron metal will provide lots of electrons for this necessary reduction process.
Eg nails, in timber, steel struts in the roof, corrugated iron, you can go on
Topic: 50 Years of Lead Mining in the Pennines
John Lawson

Forum: General Chat   Posted: 24/01/2015 19:05:05   Subject: 50 Years of Lead Mining in the Pennines
It is now 50 years since industrial archeologists published one of the most important on mining in the Pennines. The book of the above name- no not the 50!, was the work of A. Raistrick and B. Jennin
Topic: Secondary copper mineralization
John Lawson

Forum: South West England   Posted: 22/01/2015 19:23:43   Subject: Secondary copper mineralization
Stephen, put a lot of research into his findings, and I think, had a paper published on his work.

Azurite, as mentioned, previously is quite rare, and in some places, tip specimens, as at W
Topic: Parys / Copper Question
John Lawson

Forum: North Wales   Posted: 15/01/2015 19:07:20   Subject: Parys / Copper Question
I think expelllo better go back to his text books!
Molecules are formed by the sharing of electrons and hence do not, generally conduct electricity.
We are looking here at a 'simple Redox re
Topic: Parys / Copper Question
John Lawson

Forum: North Wales   Posted: 14/01/2015 19:39:27   Subject: Parys / Copper Question
In principle any material, which can supply electrons for the reduction process will be coated with a low reactivity metal.
In the cases described, silver and copper, more reactive metals, will u
Topic: Barneycraig Level, West Allendale
John Lawson

Forum: North East England   Posted: 13/01/2015 20:34:02   Subject: Barneycraig Level, West Allendale
Thanks, Peter, on reflection, water flow in Scraithole(called Toby level), is relatively small compared to BC. Which is rather odd when you consider,both the area it drains, and the amount of water c
Topic: Barneycraig Level, West Allendale
John Lawson

Forum: North East England   Posted: 12/01/2015 19:02:10   Subject: Barneycraig Level, West Allendale
Anything about Scraithole Peter?
Topic: Boundary Stones on Alston Moor
John Lawson

Forum: General Chat   Posted: 09/01/2015 20:31:30   Subject: Boundary Stones on Alston Moor
Thanks for the directions guys.
The pictures are very interesting, as the Governor & Company are another name for the LLC and the date 1849 co-includes the date of the royalty map, which is aroun
Topic: Boundary Stones on Alston Moor
John Lawson

Forum: General Chat   Posted: 07/01/2015 20:01:23   Subject: Boundary Stones on Alston Moor
Looking through my copy of part of the Greenwich Hospital's estate plans of Alston Moor, I noticed boundary stones are shown on it.
No 10 is listed Nag's Head and seems to be in the area where th
Topic: Manhole cover lifters
John Lawson

Forum: General Chat   Posted: 06/01/2015 19:52:44   Subject: Manhole cover lifters
As has already been noted there are different types of manhole lifters, most can be bought from builders merchants for around 10- £15.
You may get away by using a thin cold chisel, placed careful
Topic: Who had it the best?
John Lawson

Forum: General Chat   Posted: 29/12/2014 20:39:03   Subject: Who had it the best?
Problem with mining was poor air quality, since these guys were paid on piece work, the temptation was to work in these bad conditions, particularly after a blast. Not only was this air low in oxygen
Topic: Who had it the best?
John Lawson

Forum: General Chat   Posted: 28/12/2014 19:12:00   Subject: Who had it the best?
Roy remember, Shakespeare writing in the late 1580's was stating 'a man's allotted span is three score years and ten'.
and yet these miners were lucky to see their mid fifties.
This is why t
Topic: Who had it the best?
John Lawson

Forum: General Chat   Posted: 27/12/2014 21:13:42   Subject: Who had it the best?
Even in jest I cannot see anytime, pre the the nationalisation of the coal mines that the miners lives was anything but a very hard and short life!
In Scotland the coal miners could and were sol
Topic: Who had it the best?
John Lawson

Forum: General Chat   Posted: 22/12/2014 19:13:10   Subject: Who had it the best?
Picking up Simon's point, in the 60's when Industrial Archaeology was just beginning, wet suits were just being home made, we all thought it was the beginning of a new age of a different type of explo
Topic: Suggestion: The Dickie Bird Photo Album
John Lawson

Forum: General Chat   Posted: 19/12/2014 20:51:09   Subject: Suggestion: The Dickie Bird Photo Album
Roy,
It was one of the first things you told me when we first met and the thought has been with me ever since.
Digressing a bit, paracetamol is good for pain, but not too many at a time, and
Topic: Northern Pennine Ginging
John Lawson

Forum: Midlands   Posted: 19/12/2014 20:42:35   Subject: Northern Pennine Ginging
Another thought I had, stimulated by Dickie's Odin wagon gate photograph.
I do not think we have recorded where these pack wall formers are found.
As some of you will know it was a stipulati
Topic: Suggestion: The Dickie Bird Photo Album
John Lawson

Forum: General Chat   Posted: 19/12/2014 20:32:45   Subject: Suggestion: The Dickie Bird Photo Album
Roy, it could even be named after his, book which sparked off your own photography interest.

Could I suggest, Yesterday's Gollcondas part 2?
Topic: Nentsberry Haggs Archive Album (album)
John Lawson

Forum: North East England   Posted: 18/12/2014 19:11:50   Subject: Nentsberry Haggs Archive Album (album)
Thanks for this photo.
I had not realised that the railway lines, which went across the road, had disappeared by then!
There were stories in the 60's of explorers, with permission, coming ou
Topic: Rampgill Barrow
John Lawson

Forum: North West England   Posted: 12/12/2014 20:17:31   Subject: Rampgill Barrow
Just checked up!
The Rampgill barrow was discovered in 2002.
It was written up by Noel in WCMRG review, 28,in the same year.
It mentions the handkerchief and the pipe, on reflection, I
Topic: Rampgill Barrow
John Lawson

Forum: North West England   Posted: 11/12/2014 19:16:46   Subject: Rampgill Barrow
Assume this barrow is the one in the flats in Northumberland, on Rampgill vein.
If it is, then when I first discovered it there was a red handkerchief and a pipe.
It just looked as if the g
Topic: Couple of quick Nent questions
John Lawson

Forum: North West England   Posted: 10/12/2014 19:15:17   Subject: Couple of quick Nent questions
Thanks, Hammy for the update on the Nentsberry bolt.
For those of you out there too young to remember the death of the guy who fell down the shaft in Smallcleugh, I will just repeat that the clam
Topic: A new Gold Mine for Northern Ireland?
John Lawson

Forum: North East England   Posted: 04/12/2014 19:29:48   Subject: A new Gold Mine for Northern Ireland?
Another snippet from the Times(p58),today.
Dalradian, a Canadian company issued shares on the AIM, to raise capital, to develop a gold mine in the Sperrin Mountains in N.Ireland. The mine woulld
Topic: A new Gold Mine for Northern Ireland?
John Lawson

Forum: Northern Ireland   Posted: 04/12/2014 19:29:47   Subject: A new Gold Mine for Northern Ireland?
Another snippet from the Times(p58),today.
Dalradian, a Canadian company issued shares on the AIM, to raise capital, to develop a gold mine in the Sperrin Mountains in N.Ireland. The mine woulld
Topic: Groverake / Frasers Hush Documentation
John Lawson

Forum: North East England   Posted: 04/12/2014 19:13:15   Subject: Groverake / Frasers Hush Documentation
A couple of points! Chris obviously you are correct with your approach, regarding the accident book.
Perhaps, you should adopt, the attitude of the Grand master of Northern Geology, namely K.C.D
Topic: Boulby Mine Accidents
John Lawson

Forum: North East England   Posted: 03/12/2014 19:14:35   Subject: Boulby Mine Accidents
Article was on page 41 of Monday's Times, along with a photo of two miners.
Whose expression, I think you would call, glum!
From their dress I would assume that due to the heat, body protect
Topic: Smallcleugh falls
John Lawson

Forum: North West England   Posted: 02/12/2014 19:59:19   Subject: Smallcleugh falls
As both Chris and Richard have stated this crosscut has always been prone to falls.
However the quantity of material falling has increased considerably over the years!
Initially, where you
Topic: Minco at Nenthead
John Lawson

Forum: North East England   Posted: 02/12/2014 19:46:33   Subject: Minco at Nenthead
I personally do not think they have found a great deal!i
Initially they were going to look for new orebodies in lower strata, presumably the Melmerby Scar Llimestone.
All they seem to have f
Topic: Boulby Mine Accidents
John Lawson

Forum: North East England   Posted: 01/12/2014 19:10:27   Subject: Boulby Mine Accidents
A brief article in today's Times is emphasising the 'high'accident rate this mine has.
Apparently, miners have to take a fair time off work to recover, and this is having a detrimental effect on
Topic: Removing plates from an oldham T battery
John Lawson

Forum: Lamps & Lighting   Posted: 29/11/2014 22:19:51   Subject: Removing plates from an oldham T battery
As I understand it, all these Oldham types are lead acid batteries.
Their working electrolyte was dilute sulphuric acid, and as their efficiency diminishes the plates become more covered with unr
Topic: Minco at Nenthead
John Lawson

Forum: North East England   Posted: 24/11/2014 19:05:09   Subject: Minco at Nenthead
I think, bearing in mind a fair number of us scout the Pennine moors then one of us would have seen the drilling rigs, somewhere.
More likely assumption they have returned to Ireland to do some s
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