| Forum Home | ||||
| PC World Chat | ||||
| Thread ID: 114194 | 2010-11-22 03:18:00 | Pike River Coal Mine | Digby (677) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1155533 | 2010-11-24 01:03:00 | Appears the mine will be a tomb (unfortunately) i feel very sorry for the families and workers who are alive | Gobe1 (6290) | ||
| 1155534 | 2010-11-24 01:03:00 | You have told us that untold times so please leave this thread alone.:groan: I keep coming back in the hope that the morons here might learn something. |
Zippity (58) | ||
| 1155535 | 2010-11-24 01:05:00 | How do they know it was 1200 deg centigrade ? I suppose the experts had a thermometer feeding directly into their office. Anyway, obviously it is very hot in the middle of an explosion. But further away it is not. You're surprised people that consider methane a very real hazard in their workplace also happen to know what temparture in burns at?:confused: Again a demonstration of just how little understanding some people have of a hazardous workplace. |
Metla (12) | ||
| 1155536 | 2010-11-24 01:11:00 | I keep coming back in the hope that the morons here might learn something. At least you don't make it personal ... |
The Hitcher (14826) | ||
| 1155537 | 2010-11-24 01:12:00 | Unimpressed eh? Fair enough. I was horrified. :( The blast from the tunnel lasted 52 seconds and originated 2km away. That is a huge amount of energy to continue for nearly a minute and show up at a large distance. Hell yes. Thats a hell of a long way for the turbulence to travel, the incident within the mine was obviously immense and what came out was enough to chill my blood. In hindsight, an immediate rescue attempt after the explosion might have been the right decision. At that stage most of the gas would have been burnt out. Or it could have been the very wrong decision, There might have been (might be) a continues heavy flow of methane into the tunnel, and smoldering material, flashpoint may have been likely again within a short time frame. Its all unknowable until the hazards have been identified. |
Metla (12) | ||
| 1155538 | 2010-11-24 01:18:00 | Digby:- They know, having experimented, that a Methane + Air explosion = 1200. Try this if you can. Get a can with a push on lid. Fill with coal gas after punching a hole in the lid and the bottom. Stand same on a tripod and apply a lit match to the hole in the top. The gas will ignite and burn and suck air through the bottom of the can. When the gas/air mixture gets to the right proportion it will explode. Alternatively try the same with a 44 gal drum where the lid does not come off and stand really close so you can see the flame getting smaller. :-) It may well have been 1200C at the centre of the explosion, but it clearly wasn’t further away because two guys walked out shaken but not badly hurt or burnt at all. Interestingly, I just heard an ex bomb disposal guy on the radio who doesn’t see the problem with entering the tunnel properly equipped. He claimed that their suits can withstand 2000C :eek:and if things go wrong defusing a bomb they expect to live. There seems to be a mounting number of professionals out there that are saying "get out of the way and give us a go". If the guys have got the credentials and are happy with the gear they have, I say get out of the way and let them go if they want to. All power to their arm. :thumbs: |
B.M. (505) | ||
| 1155539 | 2010-11-24 01:22:00 | Just heard of another reason not to cause another explosion. Another explosion would consume oxygen that may be keeping them alive. |
Colpol (444) | ||
| 1155540 | 2010-11-24 01:31:00 | Uh....they know the cave if full of dangerous levels of methane, why would they ask people to walk in? Just to satisfy those that insist of placing more people in as much danger as possible? I'm sure there are people who would volunteer in a dash to do so. I know for a fact that if I had a son/brother/father down there I wouldn't hesitate - even if there was a 99% chance I would be going to my death. That 1% chance makes it worthwhile. Yes the mine is full of heat/gas/other nasties, but if you walked slowly, carefully monitoring everything every few steps, they may find they can get in further than expected or to one of the branch points where they then have several options. As for the 1200 C side of things, I think it is safe to assume that the explosion isn't currently happening, and in fact, has happened, so I would be rather surprised if it was still that hot down there. Hot air rises anyway, so if there are any 'pockets' and higher areas, all the hot air would be sitting there and there could potentially be cooler air lower down. All of course is my mere speculation and I have nothing to base any of this on but yea... If it was one of my family members down there, give me a BA and let me go. I might die, I might live, I might not get even close to anyone or anything, I may find dead bodies, I may find survivors, but I would want to go in regardless. Turning this into a tomb is just sad. |
Bozo (8540) | ||
| 1155541 | 2010-11-24 01:35:00 | Ahhhh, this is more our style, something we're good at. :annoyed: www.stuff.co.nz |
B.M. (505) | ||
| 1155542 | 2010-11-24 01:35:00 | I'm sure there are people who would volunteer in a dash to do so. No one suggested there was a lack of volunteers. However, emotions and ignorance just gets people killed. |
Metla (12) | ||
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | |||||