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Post by John on Mar 23, 2012 8:06:26 GMT -5
Ncb standardised voltages U/G were 120 and 240 volts for lighting, 240 was rare though. 3.3 Kv was the main reticulation voltage and was raised at many collieries to 6.6Kv. 550 was used for pumps and face equipment but upgraded to 1100 volts for most outbye equipment and faces late 60's to 70's.
Not sure if NCB/BC ever went to 11Kv underground, but Australia and the US had voltages of 11Kv and higher. I've worked on 11Kv as the main reticulation of a colliery.
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Post by John on Mar 23, 2012 8:10:38 GMT -5
I see someone is seeking John Richards, ex of CPL's Boulby Mine. Knew him well and worked with him, albeit only when I covered his shift when his central area electrician was off sick or on holiday. John used to be "D" shift Electrical foreman underground.
I often wonder where John Richards, Keith Tomlinson and a few of the others I worked with are up to these days. G We had a great staff at Boulby. If any of you drop by as guests here, register and say hello!!
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Post by John on Mar 25, 2012 7:10:24 GMT -5
Just page one today, as the others are just duplicates of the last one.8 Visits 11.94% .coalmine.proboard 8 Visits 11.94% coalmine.proboards.com4 Visits 5.97% Westwood colliery 3 Visits 4.48% Mining Forum 3 Visits 4.48% ncb babbington colliery 2 Visits 2.99% coal miners art 2 Visits 2.99% colliery mechanic machine operator 2 Visits 2.99% front gates of babbington colliery, nottingham 2 Visits 2.99% how to open a safety lamp magnet lock 2 Visits 2.99% the lamp cabin 1 Visit 1.49% mines cotgrave 1 Visit 1.49% alan radford high moor killamarsh 1973 1 Visit 1.49% anderson strathclyde 1 Visit 1.49% any pictures of ferrymoor colliery 1 Visit 1.49% ashforby colliery 1 Visit 1.49% background pics for males 1 Visit 1.49% bestwood colliery 1 Visit 1.49% clifton colliery image 1 Visit 1.49% coal colliery and mining forum 1 Visit 1.49% coal plough
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Post by John on Mar 25, 2012 7:13:09 GMT -5
I wonder which Clifton Colliery the searching party had in mind, I know of at least three Clifton Collieries, the one I worked at in Nottingham, one in Cumberland and one in the North East coalfield.
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Post by John on Mar 27, 2012 14:01:13 GMT -5
Todays Keywords..
4 Visits 5.63% bord and pillar mining 4 Visits 5.63% history of wollaton pit 4 Visits 5.63% miningforum 3 Visits 4.23% a67 gate end box 3 Visits 4.23% the old wolf fe safety lamp 2 Visits 2.82% coalmines proboards 2 Visits 2.82% cotgrave 2 Visits 2.82% derbyshire pits 2 Visits 2.82% desford coal mine 2 Visits 2.82% eickhoff shearer videos 2 Visits 2.82% filling in coal mine shafts pics 2 Visits 2.82% huwood rollers 2 Visits 2.82% rope spling coal mines poland 1 Visit 1.41% +UMM coolie car 1 Visit 1.41% am500 shearer 1 Visit 1.41% bord and pillar 1 Visit 1.41% can you fill a mine shaft 1 Visit 1.41% coal cutting shearer 1 Visit 1.41% coal face team at annersley colliery 1 Visit 1.41% coal miners safety lamp type 6 1 Visit 1.41% colliery forum 1 Visit 1.41% colliery coal 1 Visit 1.41% conditions down cleveland potash mine 1 Visit 1.41% cronton collery miners lamp 1 Visit 1.41% DBT mining 1 Visit 1.41% early days cleveland potash 1 Visit 1.41% emley colliery 1 Visit 1.41% fred scott deputy harworth colliry 1 Visit 1.41% hatfield colliery reserves 1 Visit 1.41% how are mine safety lamps locked 1 Visit 1.41% is the shaft at barnsley main headgear capped? 1 Visit 1.41% long hole drilling foreman cleveland potash 1 Visit 1.41% mine shafts capped huddersfield 1 Visit 1.41% mine shafts emley moor 1 Visit 1.41% mining buggie pictures 1 Visit 1.41% mining forum 1 Visit 1.41% near density coal discussion forum 1 Visit 1.41% neil moore centennial coal 1 Visit 1.41% old anglesey coal workings 1 Visit 1.41% parkside colliery 1 Visit 1.41% pickrose winch drum 1 Visit 1.41% pilot circuit for a trailing cable 1 Visit 1.41% schematic diagram of a pilot circuit cable for coal mine 1 Visit 1.41% shaft capping and filling in coal mines 1 Visit 1.41% shaft capping and filling pics and info 1 Visit 1.41% the good old days at annersley mine in 1992 1 Visit 1.41% wallacetown engineering 1 Visit 1.41% wharncliffe silkstone colliery on google 1 Visit 1.41% wirewool on oak 1 Visit 1.41% you tube.chinese collierys
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Post by John on Mar 27, 2012 14:04:43 GMT -5
I noticed "Neil Moore, Centennial Mining"
I worked with Neil at Angus Place Colliery when it was owned and operated by the NSW Electricity Commission. Neil was "Dogwatch". (nightshift) Mechanical shift Engineer, he lived in the same city as me, Bathurst, about 50 miles away from the pit. My guess is he's retired now, he must be about my age, mid sixties.
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Post by John on Mar 27, 2012 14:06:18 GMT -5
"conditions down cleveland potash mine"
Very hot and dry.
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Post by John on Mar 27, 2012 14:08:07 GMT -5
"early days cleveland potash"
I'll write a "paper" on the early days of Boulby Mine in the topic of that name later.
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Post by John on Mar 27, 2012 14:17:22 GMT -5
"schematic diagram of a pilot circuit cable for coal mine"
Fairly simple, basically a polarized relay, the relay has a shorted copper sleeve around which the coil is wound, purpose is it will only operate under DC. If AC is applied, the copper shorting tube acts like a shorted transformer winding and the relay drops out.
The circuit operates on 7.5 volts AC, and to complete a DC circuit, a diode is placed at the electric motor and grounded. So the circuit follows a core in the cable, through the diode to earth, back through the earthing conductor to the other leg of the 7.5 volt pilot transformer winding.
That's the simple circuit, it does contain, after start up, a 30 ohm none inductive resistor, it's job is to prevent an accidental motor start up if power fails and is restored. It's just to large an ohmic value to allow the pilot relay to re energize, but low enough to retain the energized relay.
Now days electronic circuits have replaced the relay.
The purpose of a pilot circuit is to monitor earth continuity of a trailing cable.
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Post by John on Mar 27, 2012 14:20:09 GMT -5
"how are mine safety lamps locked"
Magnetic lock, lead seal or lead plugs have been used to lock a flame safety lamp. Safety lamps are now redundant in most countries, multiple electronic gas testers are now in use around the world.
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Post by John on Mar 28, 2012 13:53:01 GMT -5
Page one of Keywords...
7 Visits 6.73% coalmines proboards 4 Visits 3.85% bord and pillar mining 3 Visits 2.88% "opencast","county durham" 3 Visits 2.88% a67 gate end box 3 Visits 2.88% coalmine.proboard. 3 Visits 2.88% the old wolf fe safety lamp 3 Visits 2.88% yorkshire coal miners 2 Visits 1.92% AM500, Double ended ranging drum shearer, cutting drum gear system 2 Visits 1.92% coal miners from burnley 2 Visits 1.92% coal mining art 2 Visits 1.92% derbyshire collieries 2 Visits 1.92% filling in coal mine shafts pics 2 Visits 1.92% wecol p455 electrical panel 1 Visit 0.96% cutting drum gear system, Anderson longwall AM 500 1 Visit 0.96% "winster mining" 1 Visit 0.96% "winster mining" history 1 Visit 0.96% 1994 ollerton colliery closure 1 Visit 0.96% 70s coal man duffle coats uk 1 Visit 0.96% a67 section switch british coal electrical panel 1 Visit 0.96% am500 shearer
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Post by John on Mar 28, 2012 13:57:03 GMT -5
"1 Visit 0.96% a67 section switch british coal electrical panel"
The A67 wasn't a section switch, it was a GEB, 660volts to 1100 volts, for the control of direct on line starting of 3 phase squirrel cage motors.
The Whecol circuit breaker was designated CBH30 rated for 550/1100 volts.
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Post by John on Mar 28, 2012 14:02:47 GMT -5
"2 Visits 1.92% wecol p455 electrical panel"
Wow, that's going back a few years, they were being phased out in the late 1960" to be replaced by the P70 GEB's.
The P455 was a 440/660 volt GEB primarily used by the NCB but lacked SEL circuits, the P70/A67 range of boxes contained all the modern circuits including either normal E/L circuits or the SEL circuits which the NCB mandated eventually. The P70's were 440/660 volt boxes and the A67's were 660 to 1100 volt range.
The NCB standardized 550 and 1100 volts at their collieries, the other voltages were for private mining and overseas customers.
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Post by John on Mar 28, 2012 14:17:54 GMT -5
"1 Visit 0.96% "winster mining" history"
The story related to me when I went on a one weeks electronics course during my apprenticeship sometime around 1966 was Winster Electronics was started by a pit electrician who was brilliant in electronic design and the Manager of the colliery where he worked.
His first design was the Winster "WICAS" system, "Winster Indicator Call Alarm system" for controlling the face AFC. It comprised of one console banked onto the M/G GEB's in the M/G end, with signal keys mounted along the face on the spill plates of the AFC. Every fourth box was an amplifier box with a microphone. I'd have to get my notes out, but from memory there were 22 boxes to an indicator circuit, comprising of a "Wheatstone Bridge" in line with a "counting/stepping relay" Each box had a resistor in series with the other boxes in that circuit to form a balanced bridge. When a lockout was put on in any box, it shorted the resistor to earth at that point, making the wheatstone bridge out of balance, starting a stepping relay circuit operating to re balance the wheatstone bridge, all took milliseconds, and a reading was indicated on nixitubes via a window in the FLP chamber of the console of where the lockout was placed along the face.
There was also short and open circuit protection, prestart alarm and signalling circuits. Eventually they designed a system that was total electronic, getting away from stepping relays. They also designed a manless conveyor system, automating mine conveyors and freeing up labour for belt patrols. As far as I'm aware, Winster went out of business many years back. Davis of Derby had a far superior system with their SIVAD system.
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boaz
Trainee
Posts: 37
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Post by boaz on Mar 29, 2012 2:05:01 GMT -5
Two of the bosses, John Walker and Gerry Beetles, and other staff left Winster and founded Communication and Control at Calverton. This company eventually bought/merged with Davis Derby (sometime in the late eighties/early nineties). Gerry Beetles is still the Chairman. They are still operating in Derby
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Post by shropshirebloke on Mar 29, 2012 5:10:11 GMT -5
Ah, the SIVAD. I remember a brass plate with "Signal Indication, Visual Audible Device". It was years later that I twigged it was just "Davis" spelt backwards....
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Post by John on Mar 29, 2012 7:03:10 GMT -5
That's what it was, not an acronym like WICAS was.... ;D.
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Post by John on Mar 29, 2012 7:07:03 GMT -5
Two of the bosses, John Walker and Gerry Beetles, and other staff left Winster and founded Communication and Control at Calverton. This company eventually bought/merged with Davis Derby (sometime in the late eighties/early nineties). Gerry Beetles is still the Chairman. They are still operating in Derby Nice bit of history of mining companies! I wonder what killed Winster off, they were years ahead of the competition until Davis brought SIVAD out. Amazing how long SIVAD was marketed, I worked on a face installed with the SIVAD system in the 1980's. Not sure if it's still made, as there are equal or better systems around today.
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Post by John on Mar 29, 2012 7:09:10 GMT -5
First page is the same, so here's page two.
1 Visit 0.95% a67 section switch british coal electrical panel 1 Visit 0.95% Angus Place mine history 1 Visit 0.95% asfordby colliery 1 Visit 0.95% asfordby mine 1 Visit 0.95% austrailian mining in betshanger kent 1 Visit 0.95% bankhall colliery 1 Visit 0.95% bold colliery photos 1 Visit 0.95% calverton colliery you tube 1 Visit 0.95% can you fill a mine shaft 1 Visit 0.95% chinese longwalls 1 Visit 0.95% coal mine for ripple kent 1 Visit 0.95% coal mine inbye 1 Visit 0.95% coal miners who broke the picket line 1 Visit 0.95% coal oil lamp fillers 1 Visit 0.95% Colliery days 1 Visit 0.95% colliery fireman 1 Visit 0.95% colliery forum 1 Visit 0.95% colliery pumping 1 Visit 0.95% cronton collery miners lamp 1 Visit 0.95% darton barnsley where are the mine shafts located
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Post by John on Mar 29, 2012 7:24:29 GMT -5
"1 Visit 0.95% Angus Place mine history"
Angus Place Colliery near Lithgow NSW was opened to replace the old Kerosene Vale Colliery in the early 1980's. Kerosene Vale is now the new Springvale Colliery working a Longwall face.
Not sure, but I think Angus Place was set up as a Bord and Pillar operation, reason for my thoughts, conveyor system, although a 42 inch set up, was never large enough to handle a longwall face going full bore..
First longwall was near the drift near Kerosene Vales workings together with LW2. That was a Anderson Strathclyde ranging drum shearer and Dobson Gullick roof shields.
When that area was mined out the next set of longwalls were off the main transport road to the left about 500 yards inbye. until the mid 80's when set up longwall panels at right angles to the old panels. There was some faulty area between.
There was some workings that were worked as bord and pillar during LW changeovers behind LW5 area near another old colliery workings. Clewyd I think.
Time I was there, there were about 300 total employees and output was around 48,000 tonnes per week.
The next LW package mid 80s to replace the old equipment was Dowty chock shields and a larger Anderson Strathclyde shearer. The colliery now operates a Joy package producing 2.5 million tonnes per year.
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boaz
Trainee
Posts: 37
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Post by boaz on Mar 29, 2012 10:28:56 GMT -5
Two of the bosses, John Walker and Gerry Beetles, and other staff left Winster and founded Communication and Control at Calverton. This company eventually bought/merged with Davis Derby (sometime in the late eighties/early nineties). Gerry Beetles is still the Chairman. They are still operating in Derby Nice bit of history of mining companies! I wonder what killed Winster off, they were years ahead of the competition until Davis brought SIVAD out. Amazing how long SIVAD was marketed, I worked on a face installed with the SIVAD system in the 1980's. Not sure if it's still made, as there are equal or better systems around today.They were still selling a similar system into Russia last year called "minewatch", I think.
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Post by John on Mar 29, 2012 10:56:02 GMT -5
Nice bit of history of mining companies! I wonder what killed Winster off, they were years ahead of the competition until Davis brought SIVAD out. Amazing how long SIVAD was marketed, I worked on a face installed with the SIVAD system in the 1980's. Not sure if it's still made, as there are equal or better systems around today. They were still selling a similar system into Russia last year called "minewatch", I think. I think Mine Watch is a personnel tracking/communication device, I could be wrong, I often am these days. I'll do some more research on it and Sivad.
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Post by John on Mar 29, 2012 10:59:13 GMT -5
I was wrong, it's a conveyor control monitoring system, looks like for main trunk belts. Here's Davis's write up.
Control and monitoring
Integrating your communications and conveyor signalling and protection systems into a single control station brings you complete control over vital safety and productivity related functions across an entire coal mine or heavy plant environment.
With a wide range of consoles, Davis Derby can create a central control unit specific to your operation. You can choose single or dual pilot applications to encompass all your protection and communication equipment.
You can also centralise conveyor control to the surface MineSCADA system. Using a national standard data telemetry system, your conveyors can be managed from a distance of up to ten kilometres. Environmental monitors can send warnings of volatile gases and other dangers to MineSCADA, while the outstation can be configured to control pumps and fans. The system can also provide vital environmental information to the main control room.
Certified to European Standards, a Davis Derby mine–wide monitoring and control package gives you flexibility and total control.
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Post by John on Mar 29, 2012 11:01:10 GMT -5
I just did a search of the Davis of Derby site and it came up empty regarding SIVAD, so I'd hazard a guess it's not manufactured anymore.
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Post by John on Apr 3, 2012 12:01:54 GMT -5
Well I finally received an answer to an email I sent to Davis of Derby, here's the reply.
Unfortunately, we no longer make the SIVAD unit although there are still several still in operation in India which we still try and support with some spares. We discontinued with the SIVAD about 20 years ago. Our offering now for Coal face control and many other applications is our MineWATCH PC21 distributed intelligent system. Versions of the system are used for many different control applications from simple environmental monitoring systems right through to quite elaborate conveyor control applications.
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Post by John on Apr 6, 2012 8:11:36 GMT -5
Today's Keywords.
5 Visits 7.35% ashfordby mine 4 Visits 5.88% coalmines proboards 4 Visits 5.88% find ferrymoor colliery pictures 3 Visits 4.41% miners electrical lamp 2 Visits 2.94% coalmining forum 2 Visits 2.94% fireman coal pit 2 Visits 2.94% get end box baldwin francis 1 Visit 1.47% "uk coal" 1 Visit 1.47% bilsthorpe colliery 1993 victims families 1 Visit 1.47% bilsthorpe colliery 1993 victims family 1 Visit 1.47% bilsthorpe colliery 1993 victims funerals 1 Visit 1.47% bilsthorpe colliery disaster 1993 1 Visit 1.47% Bord and pillar method videos 1 Visit 1.47% boulby mine machinery 1 Visit 1.47% brass bands in the coalmining industry 1 Visit 1.47% brighouse yorkshire england coal mine 1 Visit 1.47% coal mine workings maps 1 Visit 1.47% coal mining forum 1 Visit 1.47% coal mining songs music poems 1 Visit 1.47% dbt mining 1 Visit 1.47% deepest opencast coal mines 1 Visit 1.47% derbyshire collieries 1 Visit 1.47% dysart coal mine management 1 Visit 1.47% eastwood colliery 1 Visit 1.47% first automated low seam longwall oaky 1 Visit 1.47% forums on vibration white finger 1 Visit 1.47% gomersal pit shaft depth 1 Visit 1.47% griff clara colliery 1 Visit 1.47% how long has coal got left 1 Visit 1.47% jeffries heliminer 1 Visit 1.47% kent reopening 2012 1 Visit 1.47% lletharrog map 1 Visit 1.47% longwall roof supports 1 Visit 1.47% markham colliery 1 Visit 1.47% newstead colliery num 1 Visit 1.47% parkside colliery 1 Visit 1.47% pictures of old switchgear 1 Visit 1.47% pollington colliery 1 Visit 1.47% r b bolton mining engineers 1 Visit 1.47% radford pit in the 1890's 1 Visit 1.47% rockingham colliery 1 Visit 1.47% SCOTTISH COALFIELD 1 Visit 1.47% scottish pits 1 Visit 1.47% Shaft filling procedures 1 Visit 1.47% shearer anderson strathclyde 1 Visit 1.47% shortwall mining 1 Visit 1.47% shuttle eye colliery 1 Visit 1.47% the gold rush sky 1 Visit 1.47% the oaks colliery barnsley 1 Visit 1.47% the smallman clip 1 Visit 1.47% u.d.m.leader faces jail 1 Visit 1.47% what fuel is used in miners lamps 1 Visit 1.47% winter hill colliery horwich
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Post by John on Apr 6, 2012 8:14:44 GMT -5
1 Visit 1.47% first automated low seam longwall oaky
"Automated" or Mechanised??? "Automated" was a dream until the last few years. The NCB spent millions on ROLF, it never worked and what few faces were tried out at Ormonde Colliery etc failed. It was abandoned in the 70's, technology just wasn't available.
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Post by John on Apr 6, 2012 8:17:12 GMT -5
1 Visit 1.47% coal mine workings maps
Abandonment plans can be viewed or purchased from the Coal Authority at Berry Hill Mansfield. They now have a DVD of the whole set of plans in their possession.
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Post by John on Apr 6, 2012 8:24:53 GMT -5
1 Visit 1.47% boulby mine machinery
Boulby started off undercutting, drilling the faces and firing them, using Joy undercutting machines, Eimco Secoma drill rigs, Eimco LHD's to muck the headings out and loading the ore into Stamler Feeder Breakers onto the main belts. Roofbolting was done with Eimco Secoma roofbolting machines. All using 1100 volt supplied from Wallacetown A67 GEB's, cutters were supplied from Wallacetown Section Switches. They also had two Jeffries Heliminers fed at 3.3Kv from Belmos KFG switchgear, and Joy shuttlecars at 550volts fed from B&F GEB's.
They now use Joy CM's loading into Joy shuttlecars. No idea what roofbolters they use today.
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Post by John on Apr 11, 2012 7:21:45 GMT -5
Today's Keywords.
5 Visits 4.90% mining forum 4 Visits 3.92% coalmines proboards 3 Visits 2.94% cotgrave colliery 3 Visits 2.94% IMAGES TILMANSTONE COLLIERY 2 Visits 1.96% book underground coal mining equipment 2010 2 Visits 1.96% chocks coal mining 2 Visits 1.96% gedling colliery 2 Visits 1.96% HM inspector of mine 2 Visits 1.96% linby pit 2 Visits 1.96% makers of flame safety lamp 2 Visits 1.96% miners lamps for sale 2 Visits 1.96% mini8ng forum 2 Visits 1.96% mining qualifications board 2 Visits 1.96% oaks colliery mining disaster 2 Visits 1.96% shortwall mining 1 Visit 0.98% +Boart longwall Germany 1 Visit 0.98% anderson mavor conveyor 1 Visit 0.98% Babbington Colliery regeneration 1 Visit 0.98% baby wolf safety lamp 1 Visit 0.98% barnsley coal mines 1 Visit 0.98% Bevin Boys Association 1 Visit 0.98% calverton colliery railway 1 Visit 0.98% church gresley colliery disaster 1 Visit 0.98% cleveland potash forums 1 Visit 0.98% cleveland potash forums john richards 1 Visit 0.98% cleveland potash forums lecko 1 Visit 0.98% coal and coal mine 1 Visit 0.98% Coal mine lights oldham 1 Visit 0.98% coal miners hymns 1 Visit 0.98% coal mining in Yorkshire 1 Visit 0.98% coal mining methods 1 Visit 0.98% coal mining on angelsey 1 Visit 0.98% coal, cooling and mining forum 1 Visit 0.98% colliery fireman 1 Visit 0.98% colliery overman walkingsticks 1 Visit 0.98% colliery plates 1 Visit 0.98% concrete capping to shaft 1 Visit 0.98% deputy miners written exam 1 Visit 0.98% fake mechanical mining certificates uk 1 Visit 0.98% fireman in a colliery 1 Visit 0.98% gomersal coal mineing 1 Visit 0.98% grassmoor colliery 1 Visit 0.98% gregory springs mine ncb 1 Visit 0.98% koepe winders 1 Visit 0.98% lampe "spiralarm" 1 Visit 0.98% location of penny pie colliery 1 Visit 0.98% lofthouse pit disaster 1 Visit 0.98% max bygraves mining 1 Visit 0.98% miner's farewell definition 1 Visit 0.98% mining qualifications uk 1 Visit 0.98% ncb colleries list 1 Visit 0.98% NCB TRAINING MANUALS 1 Visit 0.98% nelson mine, northe west division, bankhall 1 Visit 0.98% new potash mine whitby 1 Visit 0.98% newton hill colliery 1 Visit 0.98% old strelley 1 Visit 0.98% oldham miners cap lamps 1 Visit 0.98% patron saint of miners safety 1 Visit 0.98% people who worked in brynlliw colliery 1 Visit 0.98% phill cullen mining books 1 Visit 0.98% pow coal miners 1 Visit 0.98% rockingham colliery 1 Visit 0.98% royston colliery 1 Visit 0.98% silkstone seam 1 Visit 0.98% skinner gedling pit 1 Visit 0.98% skytv gold rush 1 Visit 0.98% spiralarm miners lamp 1 Visit 0.98% spiralarm type s 1 Visit 0.98% the oaks mining disaster 1 Visit 0.98% the state coal mine and wonthaggi 1909-1968 for sale 1 Visit 0.98% the wolf safety lamp type fs 1 Visit 0.98% underground map of clifton colliery notts 1 Visit 0.98% Us Long Wall Census 1 Visit 0.98% west Yorkshire pits 1 Visit 0.98% what fuel is used in a mine safety lamp 1 Visit 0.98% wheldale colliery 1 Visit 0.98% william pit disaster 1947 1 Visit 0.98% wolf miner lamp price 1 Visit 0.98% yorkshire main colliery .com 1 Visit 0.98% youtube coal mining
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