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Post by shropshirebloke on Feb 4, 2011 16:57:59 GMT -5
I think this is the one you're on about John: www.dmm.org.uk/reports/9399-01.htmHorden Colliery, 1953. As far as I can understand it, it was believed that aluminium bars struck rusty iron/steel and created an incendive spark on the face. I remember aluminium being treated as contraband - no pop cans, ally foil food wrappings etc. Of course, since the early 1900s, aluminium, the new wonder material, had been used in all sorts of mining gear, especially lamps (surveyor's lamps because it was non-ferrous so wouldn't interfere with a dial)
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Post by John on Feb 4, 2011 21:03:54 GMT -5
Doesn't sound like that one, as they think it could have been caused by burning material in the goaf. Been a long time since I read the reports, over 45 years now, but something tells me the one I mentioned happened much further south, probably in Yorkshire. Daz may remember reading about the accident while at Tech. One thing has stayed with me, that the accident was caused by an alloy electric "ramshead". I know at my first pit, there was one last remnant of that era still powered up in the returns, an alloy GEB. Now I know it wasn't on the pit books, but we still maintained it as if it was. It powered a mono pump. ![8-)](//storage.proboards.com/forum/images/smiley/cool.png)
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inbye
Shotfirer.
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Post by inbye on Feb 5, 2011 11:39:56 GMT -5
As has been suggested, replicating a spark caused by something made of ally, would probably take some doing.
This is how it was explained at our pit (probably not the same accident as above) :- If aluminium was rubbed with some force on rusty steel, it would leave a "smudge". If a second piece of steel struck the first, directly on the "smudge" it could result in a spark. I can see how this could happen, even if it did rely on a fair few "if's".
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Post by John on Feb 5, 2011 12:59:09 GMT -5
As has been suggested, replicating a spark caused by something made of ally, would probably take some doing. This is how it was explained at our pit (probably not the same accident as above) :- If aluminium was rubbed with some force on rusty steel, it would leave a "smudge". If a second piece of steel struck the first, directly on the "smudge" it could result in a spark. I can see how this could happen, even if it did rely on a fair few "if's". As you say "If's" and guesses. The year I landed in Australia was the same year they had the Appin Colliery explosion, although that was a few months before I arrived. I was shown the ventilation fan taken from the district where the explosion occurred. Here's some facts from that deadly ignition, the fan control chamber was black from carbon dust, and yet the inside of the FLP door was spotless!!! A workmans safety lamp was cleared as was the Deputy's lamp, yet for some obscure reason the inquiry missed the fan control chamber, which was found open!! My guess was the district electrician was working on a live switch chamber with the door open in direct violation of the NSW CMR Act!! I'd like to know why the inside of the door was still white, while the rest of the chamber was black. To me, that say's that ignition occurred at the fan. I did ask how come the inside of the door was clean, nobody had an answer.
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Post by philford734 on Feb 8, 2011 14:52:46 GMT -5
There was an explosion at Hapton Valley Colliery, Burnley, Lancashire 22/3/1962 where a probable cause of the ignition was aluminiun foil from chewing bacco. Sixteen men died initialy followed by three more from there injuries.
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inbye
Shotfirer.
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Post by inbye on Feb 9, 2011 14:48:49 GMT -5
There was an explosion at Hapton Valley Colliery, Burnley, Lancashire 22/3/1962 where a probable cause of the ignition was aluminiun foil from chewing bacco. Sixteen men died initialy followed by three more from there injuries. Good one, I remember reading about this..... .....one of the members *Clive* used to work there, he'd probably know all about it. Not seen him around for a bit, tho'...
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Post by philford734 on Feb 24, 2011 14:02:46 GMT -5
Bold Colliery StHelens Lancs had a stonedusting method 'Derick Talbot'. He would go to the parts of the pit that needed dusting, if he got to the district he expected a bag of stonedust to be laid out every yard, if it was not then he would phone the managers office complaining that the deputies where waisting his time. He did a great job dusting especialy under belts, when the HMI or the Manager came poking there sticks under the belt they usualy found plenty of stonedust. A real good old timer that would give anybody a hand when the officials where not looking.
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Post by John on Feb 25, 2011 18:00:08 GMT -5
Takes me back to the stone dust battles Phil..... ;D
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Post by agumby on Feb 25, 2011 18:35:41 GMT -5
dusting has changes since you was at Angus John the old bulk duster outside is no longer used and we are no longer rail supplied. It is all rubber tyred now. Dusting outbye and in the panel is all done now with a flinger duster www.razer.com.au/SiteFiles/razercomau/Flinger%20Duster%201000.pdfDust come into the pit on trailers full of 1 cubic metre nylon bags full of the stuff and they have 2 nylon slings sewn in for lifting them. Pick a bag up and hang it over the duster, slash the bottom with your knife to fill it then pick up the duster, connect the quick connect hoses and dust 40 metres in less than 2 minutes. Outbye the supply boys pre hang the bags in the CT's so you just have to drive under and slash. Big difference from the flat top mounted duster and the PET mounted dusters we used when you was here. If the flinger is OOS we fall back to the air venturi and a 20kg bag every metre BTW Hi again. good to hear your still kicking.
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Post by erichall on Apr 15, 2011 3:53:43 GMT -5
Re-the 'aluminium spark' explosion, if I remember correctly the initial cause was a pocket of methane in a cavity ABOVE the arches near rthe ripping lip. A further fall in the cavity caused more debris and girders to fall. As a cosequence. Some piece of 'rusty' iron fell onto something aluminium, causing a spark. Under normal circumstances the spark would not have been of sufficient intensity to ignite the methane. The presence of the aluminium, I think later thought to have been foil from a chewing tobacco wrapper, so intensified the spark that it became hot enough to ignite the methane originally in the cavity, but brought down by the fall, and so cause an explosion. The actual cause was a mystery for some time, and it was only after much experimentation and research, that the probable cause was shown to be the increased intensity of a spark raised when Aluminium was laying on rusty iron. An experiment was set up to display this, and Aluminium in it's 'raw' state (i.e. in props, bars etc) was banned from use underground. It was still used in the cores of DWA cables, but the manufacturers of chewing tobacco, much used in the mines, removed the tobacco's aluminium foil wrapper, substituting a greased paper wrapper.
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Post by colly0410 on Feb 26, 2017 15:44:09 GMT -5
My 1'st job down the pit was dismantling & erecting stone dust barriers. But they were only in the main (intake airway) gates, can't remember putting any in the tail (return airway) gates. Anyone know why?
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Post by John on Feb 26, 2017 18:15:27 GMT -5
My 1'st job down the pit was dismantling & erecting stone dust barriers. But they were only in the main (intake airway) gates, can't remember putting any in the tail (return airway) gates. Anyone know why? No idea, but none in the returns, was the same in Oz too. Although they used more water barriers as stone dust tended to get damp.
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Post by rob52 on Feb 27, 2017 3:53:47 GMT -5
As Elec Eng investigating a fault at the longwall face we had each of the Longwall Pantech Substations apart for internal inspection at Appin over a backshift, suspected we had flashed across the rear of the rackable chassis when shearer was tripped off on locked rotor current. Found the cause, the insulation on the star connected reactors used for the loss of vacuum/welded contactor protection was 415V fitted with spagetti tubing on a 3.3kV System! ....use of an Earthfault Limitation Reactor did not help we had voltage escalation with the arcing fault, phoned outbye to EEIC with parts required. Took PJB Minecruiser to Main Gate Entry & was walking out to pit bottom when a Fed started stone dusting, had a P2 particulate cartridge respirator in tool bag from being at the Longwall Face a bit, so got in a cut thru and put it and some goggles on, the Leco with me only had a paper respirator in his hard hat, and standard safety glasses. We then walked back inbye towards the M/G to the nearest DAC phone, rang Control and gave them a spray, WRT giving the Fed permission to start stone dusting with us inbye at the Longwall.....waited 10 mins and stone dusting stopped....walked outbye to main headings and drove the Rail Loco to Pit Bottom, then the rode the Drift Out to Lamp Cabin....we were covered like the White Minstrels....... Control Desk Operator sledged the Leco........The Leco was pretty fired up by this stage........keen to ID the Fed, Deputy would not say, so the Leco lay in wait until end of shift to ID the Fed......Fed got his hard hat sweat band coated and a full squirter of Fluid Film into each gum boot for the start of the next shift.....the Leco also Vegemited the seat of the toilet frequented by the Control Desk Operator......it ensured 90% coverage of the Control Desk Operator's backside.....his time reading stick books was cut short at the start of the next shift with quite a few expletives uttered. I just went and had a tub and laughed. ******** These go alright.. Stone DustersQLD Safety AlertRob
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Post by rob52 on Mar 19, 2017 8:04:55 GMT -5
Had a look in my "Mines Rescue, Safety & Gas Detection Training Notes" - 1985, Jim Strang & Paul Mackenzie-Wood.
“ Stonedusting Inert dust intermingled with the coal dust has the effect of slowing down the flame by absorbing heat that the coal dust would otherwise receive from the flame. If sufficient inert dust is present in the air it can make the combined dust cloud non-flammable. This is the principle behind general stone dusting, which aims to prevent the development of a possible coal dust explosion ensuring that the combined dust cloud raised by a firedamp explosion will contain a sufficiently high proportion of inert dust. One difficulty in achieving this aim that coal dust may often remain more readily dispersible than stone dust. A further difficulty is that much depends on the intimate mixing of the stone and coal dusts. It has been found that if stone and coal dusts are laid in strips parallel to the roadway, an explosion can still travel along the roadway even though there is more than enough stone dust present to be capable, if the two dusts were thoroughly mixed, of preventing the propagation of an explosion. When the two dusts are laid in strips both are raised into the air, but they do not mix adequately.
This situation is analogous to that found in coal conveyor roadways. Polish research has shown that a 0.1 millimeter layer of fresh coal dust spread over compacted stone dust is still capable of propagation. This layer could be achieved after loading one or two cars.
The possibility has therefore to be faced that, notwithstanding the precautions of general stone dusting, an explosion of firedamp occurring anywhere on or in the vicinity of a coal conveyor system or transport road may, in the absence of any additional form of protection, propagate as a coal dust explosion.
The New South Wales Regulations demand that in Class A Seams, the dust finer than 250micrmeters in the face zone shall contain greater than 75 percent of incombustible matter and elsewhere 65 percent. In Class B Seams the dust finer than 250 micrometers in the face zone shall contain not less than 70 percent of incombustible matter and elsewhere 60percent. The face zone is classified as that area inbye of all points 200 meters outbye the last cut-through in bord and pillar workings and that area inbye of all points 200 meters out bye of a retreat longwall face.
A Class A Seam is one in which the general body of the return airways contains more than 0.1 percent Methane while Class B Seams contain less than 0.1 percent Methane in the general body of the return airways.
It is interesting to note that wet coal dust is still capable of being forced into suspension in the air by the concussion of a gas explosion and it is only deemed too wet to be dangerous if it exudes water when squeezed in the hands. The presence of Methane in proportions below the lower limit increase the flammability of the coal dust in the air proportionately to its concentration where, theoretically, each 1 percent of Methane increases the flammability of the coal dust by 7 percent of inert material.
In Germany hydroscopic salts are preferred to stonedust, mainly because they are available in large quantities and 50 percent salt will render coal dust non-explosive. The main drawback of this technique is the corrosive effect salt has on tools and machinery.
Coal Dust Explosions Coal dust is the chief factor involved in extensive explosions, but unfortunately it is rare that coal dust alone initiates an explosion. Usually coal dust explosions are a product of initial methane/air ignitions.
The ability of coal dust to explode depends on a variety of factors that include fineness, incombustible content, volatile content, moisture content, age, entrained or occluded flammable gas and the strength of the initiating explosion. These factors are mainly of more interest to the scientist than to those who are directly concerned with the prevention of explosions in the mine. Volatile content and quality are the determining factors that are vital, the others are relative in that they affect the intensity of an explosion.
The volatile content determines the ease with which the coal dust can be ignited and the violence of the resulting explosions, the higher the volatile content the greater the danger. Bituminous are consequently more susceptible to explosion than the higher ranking anthracite coals. It should not be assumed however, that low volatile coals will not explode with disastrous results given sufficient detonating force. Normally anthracite coals will not explodes a result of a methane/air explosion.
Similar to methane, coal dust also also has flammable limits. The limits for coal from Pittsburg in the United States are 50 grammes per cubic metre for the lower limit and 5,000 grammes per cubic metre for the upper limit. The most explosive mixture for this coal is 135 grammes per cubic metre.
Note: 50 grammes per cubic metre is an extremely dense cloud producing a suffocating atmosphere. The threshold limit value for coal dust 2 milligrams per cubic metre.
However, this has considerable significance when considered in relation to modern highly mechanised production methods, which are capable of producing coal dust at a rate sufficient to attain a flammable condition in a very short time.
Stone dusting is the main precaution in preventing coal dust explosions and stone dust barriers or water barriers are the only reliable means currently available for stopping a developed one.
With coal dust deposition at the rate produced by power loading installations, it is possible for sufficient coal dust to be deposited on a stone dusted surface to be raised and ignited. The coal dust deposits do not need to be continuous to constitute a grave danger of causing the extension of a mine explosion. Again, if there is a deposit of coal dust lying along a road wether as overlying coal dust on the floor or on a belt, there is little likelihood that stonedust on the floor would suppress an explosion. In order that stonedust may provide a certain safeguard, the coal dust deposit must be very small and the stone dust content in the region of 95 percent - although in some circumstances even 95 percent is not adequate. Experiments have shown that with coal dust strewn on a conveyor belt at the rate of 60 grammes per metre with the remainder of the gallery strewn with stonedust at the rate of 1,200 grammes per metre run, making the overall stonedust content 93 percent to 95 percent, an explosion can readily be propagated.
It is clear that for stonedust to be effective, it must be in the air at the time of the arrival of the flame. A slow moving explosion has little disturbing force and will, unless the dusts are intimately mixed, raise the coal dust from the floor with very little sonedust. The realisation of this ability to raise overlain coal dust more readily lead to the adoption of shelves or supports in roadways in order to facilitate the dispersal of stonedust in the event of an explosion. To be of value the shelves should be collapsible and ideally they should collapse immediately prior to the approach of the flame.
Water barriers may also be used and are considered to be far more practical, but not as effective as stonedust barriers on low intensity explosions or at sites remote from the point of initiation of the explosion.
The only real solution to coal dust explosions on coal transport roads lies in the elimination of sources of ignition and the realisation of the concept of a clean mine. However the adequate use of stonedust, particularly near potential points of ignition, is likely to prevent a gas ignition from ever becoming a coal dust explosion. Barriers then may be used as a backup protection in certain locations where adequate stone dusting cannot be assured.
It should understood that the provision of stonedust barriers does not in any way reduce the need to observe fully the ordinary precautions against coal dust, including those prescribed by the other parts of the NSW Coal Mines Regulations. The observance of these precautions is to some extent necessary for the successful operation of the stonedust barriers themselves. “
Rob
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Post by smshogun on Apr 22, 2017 22:39:01 GMT -5
Quite ironically John they made the cage hates from aluminium at one time to lighten them, they were always in the fitting shop for repair, or the welding shop for replacement, they didn't last long though before they reverted back to steel.
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Post by colly0410 on Apr 24, 2017 6:13:02 GMT -5
Was reading in the news about the MOAB (mother of all bombs) dropped in Afgan the other day, so me being ex Royal Artillery (after I left the pits) I read up on how it worked: It uses a fuel/air explosive,(ethylene oxide usually but can use other stuff) it uses a small dispersal charge to spread the fuel around & mix it with air then an ignition charge to set it on fire & make it explode. Says they got the idea from coal dust explosions in mines & flour dust explosions in mills..
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Post by dazbt on Apr 25, 2017 3:13:26 GMT -5
Was reading in the news about the MOAB (mother of all bombs) dropped in Afgan the other day, so me being ex Royal Artillery (after I left the pits) I read up on how it worked: It uses a fuel/air explosive,(ethylene oxide usually but can use other stuff) it uses a small dispersal charge to spread the fuel around & mix it with air then an ignition charge to set it on fire & make it explode. Says they got the idea from coal dust explosions in mines & flour dust explosions in mills.. It appears that MOAB certainly did its job, total devastation but obviously clever enough to kill hundreds of baddies whilst avoiding damage to trees in the next field and light bulbs in their boudoirs. Seen more damage on a buttock shearer face ignition at Kiveton Park.
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Post by miningstudent on Mar 9, 2020 1:01:13 GMT -5
Regarding stonedust machines, I always carried, as a shotfirer, 40 in my det bag. A couple of dets together placed inside a well positioned stonedust bag used to disperse the dust very quickly when exploded. With regard to the gases and coaldust, methane would only explode within a given range - 5-15% I believe- but it would stir up and probably ignite the coal dust lying around. This made a much more serious explosion. Whilst care had to be taken to reduce concentrations of methane., the gas that was the real killer was After- or White damp - Carbon Monoxide. Anyone who has ever de-clinkered a coke oven whilst it was burning will know of the effects of this. A feeeling of tightness in the chest, and difficulty breathing meant th operative should get into fresh air very quickly. This was the gas which rescue teams used Canaries for. The canary showed many of the same symptoms as a human, except much quicker. CO would be the after effect of an underground fire or explosion, and in its presence the canary would fall off its perch. this was the sign to don BA and get out quickly.
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Post by miningstudent on Mar 9, 2020 1:14:10 GMT -5
Unproper Edit. The actual quote was this: Regarding stonedust machines, I always carried, as a shotfirer, 40 in my det bag. A couple of dets together placed inside a well positioned stonedust bag used to disperse the dust very quickly when exploded. With regard to the gases and coaldust, methane would only explode within a given range - 5-15% I believe- but it would stir up and probably ignite the coal dust lying around. This made a much more serious explosion. Whilst care had to be taken to reduce concentrations of methane., the gas that was the real killer was After- or White damp - Carbon Monoxide. Anyone who has ever de-clinkered a coke oven whilst it was burning will know of the effects of this. A feeeling of tightness in the chest, and difficulty breathing meant th operative should get into fresh air very quickly. This was the gas which rescue teams used Canaries for. The canary showed many of the same symptoms as a human, except much quicker. CO would be the after effect of an underground fire or explosion, and in its presence the canary would fall off its perch. this was the sign to don BA and get out quickly. Interesting story. I heard that, since then, when they pack the methane, they had a smell to it (Rotten eggs, basically Mercaptan, which has a similar odor, is added to natural gas and other odorless toxins to help quickly identify potentially dangerous leaks.)
www.ocregister.com/what-we-know-about-the-coastal-rotten-egg-smell-and-what-it-means-for-your-health
*anyways, speaking of Canaries, here are some slacktivists dressing as them
www.rawstory.com/2020/02/environmentalists-dressed-as-canaries-protest-uk-coal-mine/
There'S a beer named after such unfortunate events here. We call it ''coup de grisou'' coup de grisou beer from Quebec
![](http://photos1.blogger.com/blogger/524/2911/1600/coupdegrisou.2.jpg) Ok, so I just looked up coup de grisou on Wikipedia, and it's actually a highly dangerous and inevitably fatal gas explosion in a mine: fr.wikipedia.org/wiki/grisou
The dude who wrote the following article didn't get it until he looked it up.
thefreudianpetticoat.blogspot.com/2006/07/curse-of-werebear.html
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Post by miningstudent on Mar 9, 2020 23:28:42 GMT -5
Feb 5, 2011 at 11:39am inbye said: As has been suggested, replicating a spark caused by something made of ally, would probably take some doing. This is how it was explained at our pit (probably not the same accident as above) :- If aluminium was rubbed with some force on rusty steel, it would leave a "smudge". If a second piece of steel struck the first, directly on the "smudge" it could result in a spark. I can see how this could happen, even if it did rely on a fair few "if's". As you say "If's" and guesses. The year I landed in Australia was the same year they had the Appin Colliery explosion, although that was a few months before I arrived. I was shown the ventilation fan taken from the district where the explosion occurred. Here's some facts from that deadly ignition, the fan control chamber was black from carbon dust, and yet the inside of the FLP door was spotless!!! A workmans safety lamp was cleared as was the Deputy's lamp, yet for some obscure reason the inquiry missed the fan control chamber, which was found open!! My guess was the district electrician was working on a live switch chamber with the door open in direct violation of the NSW CMR Act!! I'd like to know why the inside of the door was still white, while the rest of the chamber was black. To me, that say's that ignition occurred at the fan. I did ask how come the inside of the door was clean, nobody had an answer. Thanks for that insight. Industry cover ups are apparently more often than not linked to the fact that the company lawyer is the first person on site. I was reading an article about accidents in Australian coal mines today. My sympathies for those that suffered from such casualties. www.ft.com/content/fe96a974-5209-11ea-8841-482eed0038b1makes me think twice about working in that domain.
Industry experts said senior managers responsible for critical systems, including health and safety, were dismissed during the downturn. They add that most large miners have extensive written health and safety procedures but that implementation and enforcement is often lacking.
A recent Queensland government review of serious accidents between 2000 and 2019 also warned over the influx of inexperienced workers.
“As inexperienced people enter the industry they are being trained by people who are also reasonably inexperienced . . . the deep learning from someone who has spent a career in the industry is not being passed on,” the review said.
“Very often, the first person on the site of an accident or incident these days is the company lawyer, who then effectively takes charge of the investigation with lock-up of vital information,” he said.
“How is it possible to investigate a fatality or serious injury if all the information to do so is not readily available? The industry must move to a no blame culture.”
However, unions and families of victims insist companies and managers must be held accountable for negligence or safety standards will not improve.
“There are eight families who want answers, who want to change the safety conditions on mine sites,” said Brian Gerdes, whose 27-year-old son Jack was killed at a coal mine last year. “It’s time to get serious.”
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Post by John on Mar 10, 2020 6:13:25 GMT -5
Yes I was aware of the no blame policy way way back in the NSW mining industry, especially the Appin Colliery explosion, had they been "pin the blame" the dead electrician would have carried the can, as well as the Deputy of the district and AI&S Management. When times were hard AI&S pushed safety to the extent you got uour arse kicked if caught violating the CMRA, but when they wanted coal at the steelworks, it was f*&^ the CMRA unless the District Inspector found too many violations and fined the Manager.
In early 1980 "60 minutes" did a show on the Appin Disaster, and it was amazing how many AI&S miners contacted them anonymously, so as not to lose their jobs, and gave many instances of failure's to adhere to the CMRA, not enough stonedusting, not enough roof support, instances of high CH4 not reported so as to keep up production and many other serious complaints.
I was brought up in the UK coal mining industry, and inquiries into major accidents placed the blame where it belonged. I recall one such incident where we went through the inquiry at an advanced apprentice training course, a gas ignition on a plough face in South Wales. It was established the point of ignition was a Gate End Box in the T/G of the face. HOW?? Door open and isolator interlock defeated, electrician was found several yards away, as was the shift electrical engineer and U/M in charge, two senior management officials witnessing a violation of the M&Q Act, plus a tradesman who should have known better.
Sure, we all violated mining laws, but when you have a known gassy face, violating laws whereby they forbid exposing live conductors is a NO NO. As voltages rose to 1100v, it started to become a rarity, if at all.
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Post by maverick on Apr 23, 2020 20:52:51 GMT -5
To be honest I've never heard of "stonedusting machines", but then again I worked at Moorgreen pit from the mid 70's and then when that closed I did about 5 years at Gedling pit. Neither of them was very technical advanced if you know what I mean ![;)](//storage.proboards.com/forum/images/smiley/wink.png) I remember how the gaffer's used to get into a "bit of a flap" when they knew an inspector was coming and they used to knock off all the jobs and have us all going round stonedusting everything in sight ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) Oh, if you're wondering about my name, I have to admit I wasn't known as Amanda then ![???](//storage.proboards.com/forum/images/smiley/huh.png) mand ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) Moorgreen did have a stone dusting machine and it was tried from the end of the Knife Edge extension haulage to the East side, then it returned and turned right down the M1 to the North side; how good was it?
Like an asthmatic with premature ejeculation, it was a wheel driven mechanism which wheezed as it primed itself then had a huge spurt of the white stuff and you got a black roadway with white splashes, it was left in the shunt at the bottom of the M1 for several days before Jack Plant (I believe) was on special duties one night shift when his task was to push it into 72's main gate far enough not to hinder the stopping they were going to put on, it was hardstopped into 72's main gate and immortalised forever.
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Post by John on Apr 24, 2020 5:52:52 GMT -5
To be honest I've never heard of "stonedusting machines", but then again I worked at Moorgreen pit from the mid 70's and then when that closed I did about 5 years at Gedling pit. Neither of them was very technical advanced if you know what I mean ![;)](//storage.proboards.com/forum/images/smiley/wink.png) I remember how the gaffer's used to get into a "bit of a flap" when they knew an inspector was coming and they used to knock off all the jobs and have us all going round stonedusting everything in sight ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) Oh, if you're wondering about my name, I have to admit I wasn't known as Amanda then ![???](//storage.proboards.com/forum/images/smiley/huh.png) mand ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) Moorgreen did have a stone dusting machine and it was tried from the end of the Knife Edge extension haulage to the East side, then it returned and turned right down the M1 to the North side; how good was it? Like an asthmatic with premature ejeculation, it was a wheel driven mechanism which wheezed as it primed itself then had a huge spurt of the white stuff and you got a black roadway with white splashes, it was left in the shunt at the bottom of the M1 for several days before Jack Plant (I believe) was on special duties one night shift when his task was to push it into 72's main gate far enough not to hinder the stopping they were going to put on, it was hardstopped into 72's main gate and immortalised forever.
First pit I worked at in NSW had a stone dusting machine in each district and all the Bords were dusted EVERY nightshift. There was also a rail mounted machine hauled by the 30 tonne diesel loco to dust all the main roads. Same at Angus Place in the western coal field, large silo outside and a large stone dusting machine used on the Saturday dayshift when nobody was U/G, it did such a good job the returns got a free coat of dust.
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Post by hazimsport12 on Nov 2, 2021 5:58:25 GMT -5
I think this is an ironic saying about how tired the students are and working hard to get their dream...
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