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Post by John on Jan 7, 2013 16:06:18 GMT -5
Daz, this might give you a clearer idea of what my last post was about, this is the "Keyword Activity" This information is not provided by Proboards by the way, but by a utility piece of software I installed. You can also see that the people searching did find the information on the subjects they were searching for. 7 Jan 14:55:33 www.google.co.uk claims against national coal for loss of hearing forum #20 ?board=gen&action=display&thread=886 7 Jan 14:39:28 www.google.com history of coal mining in nottingham #192 ?board=qa&action=display&thread=38 7 Jan 14:32:05 www.google.co.uk miner safety lamp fuel ?board=qa&action=display&thread=740 7 Jan 14:06:20 www.google.com history of coal mining in nottingham #134 ?board=potem&action=display&thread=294 7 Jan 13:53:24 www.google.co.uk hodroyd and monkton coal mineImage Search ?board=s&action=display&thread=1019 7 Jan 13:48:00 www.google.co.uk lucy thomas colliery #39 ?board=poy&action=display&thread=567 7 Jan 13:31:22 www.google.co.uk doscoe coal machines ?board=em&action=display&thread=99&page=2 7 Jan 12:55:50 www.google.co.uk nottingham,radford,colliery earch?q=cache:jlnkdUgjW3oJ:http://coalmine.proboards.com/index.cgi%3Fboard%3Dqa%26action%3Ddisplay%26thread%3D38%2Bnottingham,radford,colliery&hl=en&gbv=2&ct=clnk 7 Jan 12:29:14 www.bing.com mining forum coalmine.proboards.com/index.cgi 7 Jan 12:27:52 www.bing.com mining forum coalmine.proboards.com/index.cgi 7 Jan 12:26:09 www.bing.com mining forum coalmine.proboards.com/index.cgi 7 Jan 12:03:10 www.google.com coal – deep shaft mining #11 ?board=g&action=display&thread=763 7 Jan 11:19:41 www.google.co.uk mine shafts under houses in wigan #13 ?action=display&board=we&thread=646&page=2 7 Jan 11:14:11 www.bing.com wallacetown engineering ?board=dis&action=display&thread=11 7 Jan 11:13:58 www.bing.com wallacetown engineering ?board=em&action=display&thread=98 7 Jan 11:10:15 search.yahoo.com underground mines in nottinghamshire 1890 ?board=bc&action=display&thread=505 7 Jan 11:05:33 www.google.co.uk skiers spring colliery ?board=poy&action=display&thread=731 7 Jan 10:57:00 www.google.co.uk redbrook colliery #9 ?board=poy&action=display&thread=304 7 Jan 10:56:22 www.google.co.uk winding drum timber lags #118 ?board=bc&action=display&thread=505
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Post by Wheldale on Jan 8, 2013 16:28:26 GMT -5
John, I'm not quite with it (I know!) If I search for say Wheldale pit, come accross this forum and click on the link does that register as activity? Or does it register that this forum came up in the list of everything in google?
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Post by John on Jan 8, 2013 17:51:40 GMT -5
John, I'm not quite with it (I know!) If I search for say Wheldale pit, come accross this forum and click on the link does that register as activity? Or does it register that this forum came up in the list of everything in google? I installed some script in the site's Admin functions, what it does is analyze guests viewing the site, it picks up where they come from and what rout, ie what search engine and what search criteria they used to find us here.
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Post by John on Jan 28, 2013 8:01:56 GMT -5
Today's Keywords.
6 Visits 7.06% gedling colliery coal quarry 5 Visits 5.88% (Encrypted Search) 5 Visits 5.88% ab16 coal shearer 5 Visits 5.88% huwood mining machinery 4 Visits 4.71% whitwick colliery disaster 3 Visits 3.53% coal pro boards 3 Visits 3.53% shearers at lambton d colliery 2 Visits 2.35% barnsley seam coal 2 Visits 2.35% history of radford pit 1 Visit 1.18% asfordby mine 1 Visit 1.18% barnsley coal mines 1 Visit 1.18% board and pillar mining method 1 Visit 1.18% bolsover colliery st john's 1 Visit 1.18% brookhouse colliery beighton 1 Visit 1.18% coal mine firemen 1 Visit 1.18% coal miner collectibles 1 Visit 1.18% coal mining boards 1 Visit 1.18% coal mining in 1960 s 1 Visit 1.18% deaths at clifton colliery nottingham 1 Visit 1.18% dover colliery shakespeare 1 Visit 1.18% emley moor colliery 1 Visit 1.18% fryston wheldale colliery images 1 Visit 1.18% gomersal colliery 1 Visit 1.18% grade 1 deputy n the overman 1 Visit 1.18% harworth colliery reopening 1 Visit 1.18% hem heath colliery 1 Visit 1.18% how to shuffle shearer into face 1 Visit 1.18% huwoods factory team valley 1 Visit 1.18% in a mining colliery what is the job of a grade 1 deputy 1 Visit 1.18% jubilee coal colliery 1 Visit 1.18% jubilee colliery 1 Visit 1.18% lofthouse colliery photography 1 Visit 1.18% lound hall training centre 1 Visit 1.18% magnetic safety lamp 1 Visit 1.18% magnets for mine safety lamps 1 Visit 1.18% meltonfield coal seam mining barnsley 1 Visit 1.18% miners safety lamp magnet 1 Visit 1.18% mining forum 1 Visit 1.18% n.c.b. westhorpe 1 Visit 1.18% new monckton colliery history 1 Visit 1.18% new oaks colliery history 1 Visit 1.18% nostell pit 1 Visit 1.18% nottingham pits 1 Visit 1.18% nottinghamshire pits 1 Visit 1.18% oaks mining disaster 1 Visit 1.18% parkhill colliery photography 1 Visit 1.18% Protector Garforth GR6S flame safety lamp 1 Visit 1.18% protector mining lamp 1 Visit 1.18% remote control of continuous miner 1 Visit 1.18% reyrolle belmos 1 Visit 1.18% safety lamp magnet 1 Visit 1.18% shaft sinkers helmet 1 Visit 1.18% sight spooked me, tall tale, cowboy, super human powers 1 Visit 1.18% skiers view colliery 1 Visit 1.18% south hetton undermanager coalpit 1960s 1 Visit 1.18% spontaneous combustion coal castleford 1 Visit 1.18% welbeck estates [pegswood northumberland 1 Visit 1.18% what fuel is used in a old miners lamp 1 Visit 1.18% who are the shot firing grade 1 deputy n the overman in a colliery
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Post by John on Jan 28, 2013 8:03:45 GMT -5
"6 Visits 7.06% gedling colliery coal quarry"
Gedling only deep mined coal, there were no open cast workings, the shallowest seams at Gedling were way to deep to opencast.
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Post by John on Jan 28, 2013 8:05:14 GMT -5
" 1 Visit 1.18% who are the shot firing grade 1 deputy n the overman in a colliery "
Both were legally qualified as class3 ticket holders to fire shots.
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Post by John on Jan 28, 2013 8:07:59 GMT -5
"1 Visit 1.18% deaths at clifton colliery nottingham"
There were a few over it's 99 year history, but no major accidents involving more than one in any accident. Thankfully, Clifton was pretty much clear of high methane problems.
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Post by John on Feb 14, 2013 8:21:31 GMT -5
Today's Keywords.
11 Visits 13.41% (Encrypted Search) 6 Visits 7.32% coal pro boards 2 Visits 2.44% bjd coal mine equipment 2 Visits 2.44% davis derby miners light 2 Visits 2.44% depth of thorpe hesley coal mine 2 Visits 2.44% emely moor colliery 2 Visits 2.44% mining forum 2 Visits 2.44% shuttle eye colliery 2 Visits 2.44% silverhill colliery 1 Visit 1.22% NCB student apprenticeships 1 Visit 1.22% "hatfield colliery" 1 Visit 1.22% 1 visit 2.63% monkton colliery 1 Visit 1.22% 1954 oldham type t 1 Visit 1.22% 1954 oldham type t miners 1 Visit 1.22% active mining forums 1 Visit 1.22% airdox blasting mining 1 Visit 1.22% anderson strathclyde 1 Visit 1.22% arkwright colliery 1 Visit 1.22% bullcliffe wood colliery photos 1 Visit 1.22% cardox coal application 1 Visit 1.22% cardox shell 1 Visit 1.22% coal colliery mining forum 1 Visit 1.22% coal mine deputy stick 1 Visit 1.22% coal seams durham coalfield 1 Visit 1.22% colliery video 1 Visit 1.22% colliery winders 1 Visit 1.22% commemorative plates british coal shirebrook 1 Visit 1.22% contactor wecol 1 Visit 1.22% cotgrave 1 Visit 1.22% davis derby miners safety lamp 1 Visit 1.22% deaths at tilmanstone colliery 1 Visit 1.22% derbyshire coal mining history 1 Visit 1.22% ex ncb electrician 1 Visit 1.22% former coal mines in derbyshire 1 Visit 1.22% hapton valley 1 Visit 1.22% hatfield colliery 1 Visit 1.22% hatfield colliery video 1 Visit 1.22% hem heath colliery 1 Visit 1.22% hilltop colliery 1 Visit 1.22% history of hapton valley pit 1 Visit 1.22% home for lunch painting 1 Visit 1.22% huwood mining machinery ltd 1 Visit 1.22% huwoods 1 Visit 1.22% ironstone quarries- locomotive pictures 1 Visit 1.22% koepe winders 1 Visit 1.22% mine hierarchy 1 Visit 1.22% miners forum 1 Visit 1.22% miners lamp jcm type 4 1 Visit 1.22% mines in derbyshire pictures 1 Visit 1.22% moorgreen colliery history 1 Visit 1.22% murton colliery band 1 Visit 1.22% nife mining lamp 1 Visit 1.22% pickrose mining 1 Visit 1.22% pit at thorpe hesley 1 Visit 1.22% skiers spring colliery 1 Visit 1.22% sympathy coal miner 1 Visit 1.22% wentworth and hoyland common station 1 Visit 1.22% were the shaft in as nostell pit 1 Visit 1.22% whitwell derbyshire coal mines 1 Visit 1.22% why blue glas in miners lamp
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Post by John on Feb 14, 2013 8:26:14 GMT -5
"1 Visit 1.22% 1954 oldham type t 1 Visit 1.22% 1954 oldham type t miners"
If my memory serves me right, the type "T" denoted Oldhams battery, and I'm almost positive the type T was the red battery with the clear filler/level on each cell. In which case, it came out in the early 70's not 1954. It was a pain as the seal between the clear filler and red battery case used to leak after a short time. Prior to the type T was the hard rubber cases with the large round screw seal for the filler point.
Not sure now what Type the latter battery cases were, the dark see through plastic cases, probably still Type T..
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Post by Wheldale on Feb 14, 2013 14:03:59 GMT -5
Ive got an old T battery. It was from 1993, made of dark clear plastic. I believe the latest version id the T6 which has a 24hr life between charges.
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Post by John on Feb 14, 2013 15:32:09 GMT -5
Ive got an old T battery. It was from 1993, made of dark clear plastic. I believe the latest version id the T6 which has a 24hr life between charges. That was the one after the red T batteries, we had the dark see through plastic ones late 70's, I don't know the date they were introduced, but the red T's came into use around 1972/3ish. The only way you'd get 24 hours out of any Oldham battery was on pilot bulb!! A brand new one straight from the stores probably lasted 18 hours max. Longest life I could scratch out of them was 18 months to two years in service. They were OK for visitors cap lamps, but not for mineworkers. I found the biggest problem was the plates started "shedding", actually they weren't plates, but tubes, but I saw one where it had disintegrated and shorting out internally after just a years service.
The best bulbs were the quartz halogens, pure bright white light, pre focussed. Box of those cost as much as a battery!!!!!
Now the new Oldhams have an LED headpiece with lithium batteries weighing a fraction of the lead acid batteries.
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Post by dazbt on Feb 14, 2013 16:54:08 GMT -5
"They were OK for visitors cap lamps, but not for mineworkers."A tad condescending J.
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Post by Wheldale on Feb 14, 2013 17:20:51 GMT -5
Ive got an old T battery. It was from 1993, made of dark clear plastic. I believe the latest version id the T6 which has a 24hr life between charges. That was the one after the red T batteries, we had the dark see through plastic ones late 70's, I don't know the date they were introduced, but the red T's came into use around 1972/3ish. The only way you'd get 24 hours out of any Oldham battery was on pilot bulb!! A brand new one straight from the stores probably lasted 18 hours max. Longest life I could scratch out of them was 18 months to two years in service. They were OK for visitors cap lamps, but not for mineworkers. I found the biggest problem was the plates started "shedding", actually they weren't plates, but tubes, but I saw one where it had disintegrated and shorting out internally after just a years service.
The best bulbs were the quartz halogens, pure bright white light, pre focussed. Box of those cost as much as a battery!!!!!
Now the new Oldhams have an LED headpiece with lithium batteries weighing a fraction of the lead acid batteries.The T6 Oldham battery will burn for upto 24hrs on a the main beam so is said on a few sites that sell the Oldham lamps for pot holing etc. Protector Lamp and Lighting are selling a small Li-ion headlamp that will burn for 22 hours, helmet mounted and only weighs 138 grams! LED lighting is the future so it seems!
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Post by John on Feb 14, 2013 17:45:08 GMT -5
"They were OK for visitors cap lamps, but not for mineworkers."A tad condescending J. Not really Daz, visitors are usually underground no more than four hours, I've often been telephoned to do a double shift.
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Post by John on Feb 14, 2013 17:54:21 GMT -5
That was the one after the red T batteries, we had the dark see through plastic ones late 70's, I don't know the date they were introduced, but the red T's came into use around 1972/3ish. The only way you'd get 24 hours out of any Oldham battery was on pilot bulb!! A brand new one straight from the stores probably lasted 18 hours max. Longest life I could scratch out of them was 18 months to two years in service. They were OK for visitors cap lamps, but not for mineworkers. I found the biggest problem was the plates started "shedding", actually they weren't plates, but tubes, but I saw one where it had disintegrated and shorting out internally after just a years service.
The best bulbs were the quartz halogens, pure bright white light, pre focussed. Box of those cost as much as a battery!!!!!
Now the new Oldhams have an LED headpiece with lithium batteries weighing a fraction of the lead acid batteries. The T6 Oldham battery will burn for upto 24hrs on a the main beam so is said on a few sites that sell the Oldham lamps for pot holing etc. Protector Lamp and Lighting are selling a small Li-ion headlamp that will burn for 22 hours, helmet mounted and only weighs 138 grams! LED lighting is the future so it seems! I can assure you in my experience, I've never come across an Oldham battery that will last 24 hours.... A double shift used to tax them. When I was with the NCB, then BG, then Boulby mine, we used the one amp bulbs, the batteries according to Oldham specs are 13Ahr rated, that will just about cover a double shift, taking into account that during part of the shift, it will be on pilot bulb. I'd like to meet the man who can get 24Ahrs out of a 13Ahr battery, I'd be well on my way to my first million dollars. I not only used the lamps during my 25 plus years as an electrician, but also serviced them on overtime at BG, and was an appointed lamp room attendant at Angus Place colliery as surface electrician.
How Oldham get their batteries to give a fairly even light throughout a shift, is to use a higher SG of acid.
Yep the new range of LED caplamps are very light, they are very expensive too, more than double the cost of the conventional cap lamp, so you'll still see a lot of mining companies hanging on to old technology.
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Post by Wheldale on Feb 15, 2013 5:07:41 GMT -5
Ive been looking abit more at the T6 battery. It is called a megalite battery. 16Ah output. It along with the T5 was discontinued last year having been replaced with a Li-ion battery. These new batteries cost over a hundred quid each! Never seen a T6 in use but like most things do they do what the manufactuer claims? If the T6 does last 24hrs how many charges does it take before it wont last for 24hrs. Besides how many miners need a 24hr battery?
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Post by John on Feb 15, 2013 7:29:55 GMT -5
Ive been looking abit more at the T6 battery. It is called a megalite battery. 16Ah output. It along with the T5 was discontinued last year having been replaced with a Li-ion battery. These new batteries cost over a hundred quid each! Never seen a T6 in use but like most things do they do what the manufactuer claims? If the T6 does last 24hrs how many charges does it take before it wont last for 24hrs. Besides how many miners need a 24hr battery? Like I said, in my experience I never saw one that could or did last 24 hours. I used to work 14 hours a day at BG, although my lamp wasn't on all the time, workshops were well lit and the loader point at the face was well lit. My lamp when I was with the NCB would be starting to show after doing four hours overtime.....Wouldn't have lasted too much longer. Also, taking a lead acid battery down to where it's very low damages it and reduces it's working life. Cap lamp batteries are also subject to shock from knocks etc, which doesn't to the "plates" any good. I also said the life was two years or less, there were exceptions, but pretty rare in lamps used daily.
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Post by dazbt on Feb 15, 2013 7:35:54 GMT -5
I don't have any technical knowledge of cap lamp batteries and I've no idea as to what goes on underground today, but, what I can say is this; in my experience the longest periods spent underground in any one session were the very people that John perhaps suggests should be given the oldest, weakest and worst performing lamps ............. the visitors, and that is exactly what happened, the crap lamps were often allocated the V numbers. I've personally had numerous Visitors lamps that wouldn't even last a shift let alone 12 hours and God forbid 24 hours and I might add that I have worked 24 hour underground shifts on dozens of occasions and many even longer than that, as a Visitor or as John says a non mineworker I've frequently been in a position attending shearer breakdowns where my Visitor's lamp has failed and I've been loaned the stage-loader button man's lamp to continue, on one job I remember having 3 lamps fail (my own, a borrowed one and a further visitors lamp brought to me by the following shift and then having to work the last part of the 'shift' and walk out in the light of someone else's beam).
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Post by John on Feb 15, 2013 7:36:34 GMT -5
Where did you pick up the lead acid cap lamp battery had been discontinued? The reason I ask is Gilbert Gray, the Australian agent for Oldham was still selling them and rack chargers up until a couple of months back when I checked. Also Wheat are still making lead acid cap lamps, they are the company Oldham were licensed from for their caplamp design...(battery only these days)
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Post by John on Feb 15, 2013 7:39:24 GMT -5
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Post by Wheldale on Feb 15, 2013 8:16:02 GMT -5
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Post by John on Feb 15, 2013 8:57:17 GMT -5
Like all lead acid batteries, they have a finite life, in regular service two years is about it's life, there are the exceptions. But once they approach four years old they aren't worth hanging on to. Sulphation and plate disintegration are the two enemies of this old technology.
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Post by John on Feb 15, 2013 10:33:19 GMT -5
I remember in the mid 80's the type T was around $A100, and a box of 10 quartz halogen pre focussed bulbs were over $A100!! Kind of shocked how much the Li Ion batteries cost, but that's retail, I don't know what Koehler charge for theirs, I think I costed a full LED camplamp at a couple of hundred bucks a couple of years back direct from Koehler... Can't see me paying that for use as a torch... I'll stick with the Maglites.
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Post by Wheldale on Feb 15, 2013 12:54:33 GMT -5
Last battery I bought was about 10 years ago, that was 50 quid. I wonder if alot of the lamp companies are related though technology? I though Wheat was part of Oldham, then I looked on the Kohler link and Wheat is part of Kohler.
When I was in South Africa we used Oldham lamps but the battery was blue and the head piece only had one bulb, no back up! There must be over 3 million caplamps in use in the world, I wonder if most of them are Oldham lamps?
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Post by John on Feb 15, 2013 13:41:12 GMT -5
In the 60's in the UK, Oldham had the biggest share of caplamps, followed by Ceag. Both bore a strong resemblance to the Koehler caplamp of the time, right down to the charge station hook up, ie push twist and charge.... Koehler licensed Oldham to produce it's design in the UK, my guess is Ceag was also licensed to produce the design. The NCB also had two makes, that I know of, with nife batteries, one was the Ceag, which I used in my underground training, all stainless steel, and three nickel iron cells making up the battery. Edison was the other, similar battery but a bakelite headpiece much like the Oldhams. Oldham had the Australian mining market sewn up, they also sold and maintained markets in many countries, Daz might be able to tell us some of the countries he's been to who used Oldhams. Canada used a home manufacturer plus the US Koehler's. Koehler dominates the us mining industry with both it's "Wheat" cap lamps and it's Wolf oil lamps.
Not sure if Oldham broke into the SA market, I note they had a company there that made cap lamps and also exported them.
I see a couple of Chinese companies are trying to muscle in on the LED caplamp market.
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Post by dazbt on Feb 15, 2013 14:36:32 GMT -5
In the 60's in the UK, Oldham had the biggest share of caplamps, followed by Ceag. Both bore a strong resemblance to the Koehler caplamp of the time, right down to the charge station hook up, ie push twist and charge.... Koehler licensed Oldham to produce it's design in the UK, my guess is Ceag was also licensed to produce the design. The NCB also had two makes, that I know of, with nife batteries, one was the Ceag, which I used in my underground training, all stainless steel, and three nickel iron cells making up the battery. Edison was the other, similar battery but a bakelite headpiece much like the Oldhams. Oldham had the Australian mining market sewn up, they also sold and maintained markets in many countries, Daz might be able to tell us some of the countries he's been to who used Oldhams. Canada used a home manufacturer plus the US Koehler's. Koehler dominates the us mining industry with both it's "Wheat" cap lamps and it's Wolf oil lamps.
Not sure if Oldham broke into the SA market, I note they had a company there that made cap lamps and also exported them.
I see a couple of Chinese companies are trying to muscle in on the LED caplamp market. No point in asking me J, I only ever had Visitor's lamps wherever I went, you'd need to ask a proper mineworker ;D
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Post by John on Feb 15, 2013 15:52:50 GMT -5
In the 60's in the UK, Oldham had the biggest share of caplamps, followed by Ceag. Both bore a strong resemblance to the Koehler caplamp of the time, right down to the charge station hook up, ie push twist and charge.... Koehler licensed Oldham to produce it's design in the UK, my guess is Ceag was also licensed to produce the design. The NCB also had two makes, that I know of, with nife batteries, one was the Ceag, which I used in my underground training, all stainless steel, and three nickel iron cells making up the battery. Edison was the other, similar battery but a bakelite headpiece much like the Oldhams. Oldham had the Australian mining market sewn up, they also sold and maintained markets in many countries, Daz might be able to tell us some of the countries he's been to who used Oldhams. Canada used a home manufacturer plus the US Koehler's. Koehler dominates the us mining industry with both it's "Wheat" cap lamps and it's Wolf oil lamps.
Not sure if Oldham broke into the SA market, I note they had a company there that made cap lamps and also exported them.
I see a couple of Chinese companies are trying to muscle in on the LED caplamp market. No point in asking me J, I only ever had Visitor's lamps wherever I went, you'd need to ask a proper mineworker ;D What more can I say, you were a fitter.... ;D ;D
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boaz
Trainee
Posts: 37
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Post by boaz on Feb 18, 2013 11:25:28 GMT -5
There is a company in South Africa called Schauenburg who provide most of the cap lamps to the mines. I've seen the old and new products on various "mining" programmes on Discovery channel
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Post by John on Feb 18, 2013 13:01:56 GMT -5
There is a company in South Africa called Schauenburg who provide most of the cap lamps to the mines. I've seen the old and new products on various "mining" programmes on Discovery channel I thought there was a company down there that made them, probably goes back to the embargoes over apartheid, when companies weren't allowed to sell goods in SA....
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boaz
Trainee
Posts: 37
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Post by boaz on Feb 19, 2013 3:44:56 GMT -5
I believe that Compass Minerals, Salt Union at Winsford have just renewed all their lamps with the Schauenburg lamp
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