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![]() "Howard Berkowitz" wrote in message ... In article , (Al Dykes) wrote: Some people might do well to look at the geology of Syria. The flatter parts are generally sandstone or an equivalent crumbly rock that won't support tunneling much deeper than irrigation. A start was once made on a Damascus subway, but apparently abandoned because every tunnel would have to be steel- or concrete-lined. As is every tunnel on the London Underground, except for some of the older tunnels were cast iron segments or brick linings are used. The more mountainous areas are karst, which does tend to have natural caves, but doesn't lend itself enormously to tunneling. Serious deep excavations, like Cheyenne Mountain, are granite or similar hard rock. You may wish to think again London is built on clay, I guess that means you think they couldnt possibly build the London Underground The sea bed under the English Channel is made of soft chalk. Somehow though they managed to build a tunnel under it. The technical breakthrough that makes tunnelling in soft materials isnt exactly new . The use of a tunnelling shield and brick lining dates in modern times was introduced by Marc Brunel but the technique seems to have been known to the Romans. In the middle east the techniques for building extensive underground tunnels have been know since antiquity. The network of irrigation tunnels in Iran are known as the qanat and in Arabia they call them the falaj. Keith |
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In article , "Keith Willshaw"
wrote: "Howard Berkowitz" wrote in message ... In article , (Al Dykes) wrote: Some people might do well to look at the geology of Syria. The flatter parts are generally sandstone or an equivalent crumbly rock that won't support tunneling much deeper than irrigation. A start was once made on a Damascus subway, but apparently abandoned because every tunnel would have to be steel- or concrete-lined. As is every tunnel on the London Underground, except for some of the older tunnels were cast iron segments or brick linings are used. The more mountainous areas are karst, which does tend to have natural caves, but doesn't lend itself enormously to tunneling. Serious deep excavations, like Cheyenne Mountain, are granite or similar hard rock. You may wish to think again London is built on clay, I guess that means you think they couldnt possibly build the London Underground No, I said _serious_ tunneling. Cheyenne Mountain is a good example of a serious tunneling excavation (and other system) intended to withstand near misses of nuclear weapons, or deep-penetrating PGMs with conventional warheads. The sea bed under the English Channel is made of soft chalk. Somehow though they managed to build a tunnel under it. The technical breakthrough that makes tunnelling in soft materials isnt exactly new . The use of a tunnelling shield and brick lining dates in modern times was introduced by Marc Brunel but the technique seems to have been known to the Romans. And won't have much effect on a modern penetrating or high blast weapon. Cheyenne Mountain isn't only granite, it's granite in a matrix of steel stabilizing bolts. Zhiguli is presumably comparable. In the middle east the techniques for building extensive underground tunnels have been know since antiquity. The network of irrigation tunnels in Iran are known as the qanat and in Arabia they call them the falaj. Exactly. The qanats are what I'm describing in the Syrian lowlands. They don't and can't go deeply enough to withstand modern bombing. |
#3
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![]() "Howard Berkowitz" wrote in message ... In article , "Keith Willshaw" wrote: "Howard Berkowitz" wrote in message ... In article , (Al Dykes) wrote: Some people might do well to look at the geology of Syria. The flatter parts are generally sandstone or an equivalent crumbly rock that won't support tunneling much deeper than irrigation. A start was once made on a Damascus subway, but apparently abandoned because every tunnel would have to be steel- or concrete-lined. As is every tunnel on the London Underground, except for some of the older tunnels were cast iron segments or brick linings are used. The more mountainous areas are karst, which does tend to have natural caves, but doesn't lend itself enormously to tunneling. Serious deep excavations, like Cheyenne Mountain, are granite or similar hard rock. You may wish to think again London is built on clay, I guess that means you think they couldnt possibly build the London Underground No, I said _serious_ tunneling. Cheyenne Mountain is a good example of a serious tunneling excavation (and other system) intended to withstand near misses of nuclear weapons, or deep-penetrating PGMs with conventional warheads. Cheyanne Mountain was designed and built long before the concept of deep-penetrating PGM's became a reality, so it is doubtful that it was "intended" to handle that event; it was intended to withstand anything but a direct hit from a high yield nuclear warhead, though. The sea bed under the English Channel is made of soft chalk. Somehow though they managed to build a tunnel under it. The technical breakthrough that makes tunnelling in soft materials isnt exactly new . The use of a tunnelling shield and brick lining dates in modern times was introduced by Marc Brunel but the technique seems to have been known to the Romans. And won't have much effect on a modern penetrating or high blast weapon. Cheyenne Mountain isn't only granite, it's granite in a matrix of steel stabilizing bolts. Zhiguli is presumably comparable. In the middle east the techniques for building extensive underground tunnels have been know since antiquity. The network of irrigation tunnels in Iran are known as the qanat and in Arabia they call them the falaj. Exactly. The qanats are what I'm describing in the Syrian lowlands. They don't and can't go deeply enough to withstand modern bombing. If you think that such facilities can only be built in granite, think again. I'd be very surprised if Mount Weather in Virginia, one of the formerly-secret (along with Raven Rock in Maryland and the congrssional facility at White Hot Springs (IIRC) in West Virginia) emergency relocation sites, was built in anything other than that Karst limestone you ridiculed earlier. Mount Weather and Raven Rock are both tunnel complexes. Brooks |
#4
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![]() "Howard Berkowitz" wrote in message ... In article , "Keith Willshaw" wrote: "Howard Berkowitz" wrote in message ... In article , (Al Dykes) wrote: Some people might do well to look at the geology of Syria. The flatter parts are generally sandstone or an equivalent crumbly rock that won't support tunneling much deeper than irrigation. A start was once made on a Damascus subway, but apparently abandoned because every tunnel would have to be steel- or concrete-lined. As is every tunnel on the London Underground, except for some of the older tunnels were cast iron segments or brick linings are used. The more mountainous areas are karst, which does tend to have natural caves, but doesn't lend itself enormously to tunneling. Serious deep excavations, like Cheyenne Mountain, are granite or similar hard rock. You may wish to think again London is built on clay, I guess that means you think they couldnt possibly build the London Underground No, I said _serious_ tunneling. Cheyenne Mountain is a good example of a serious tunneling excavation (and other system) intended to withstand near misses of nuclear weapons, or deep-penetrating PGMs with conventional warheads. I rather think that the hundreds of miles of tunnels that make up the London Underground system are really quite serious. So were the Cabinet war rooms and the underground military HQ in London and Northwood. All built under clay The sea bed under the English Channel is made of soft chalk. Somehow though they managed to build a tunnel under it. The technical breakthrough that makes tunnelling in soft materials isnt exactly new . The use of a tunnelling shield and brick lining dates in modern times was introduced by Marc Brunel but the technique seems to have been known to the Romans. And won't have much effect on a modern penetrating or high blast weapon. It wasnt suggested it would, however a 100ft of clay or sandstone, especially if properly reinforces is rather difficult to penetrate using conventional weapons. Cheyenne Mountain isn't only granite, it's granite in a matrix of steel stabilizing bolts. Zhiguli is presumably comparable. I think the Syrians know about steel and concrete too. In the middle east the techniques for building extensive underground tunnels have been know since antiquity. The network of irrigation tunnels in Iran are known as the qanat and in Arabia they call them the falaj. Exactly. The qanats are what I'm describing in the Syrian lowlands. They don't and can't go deeply enough to withstand modern bombing. But tunnels built using modern techniques can and do. Keith ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- |
#5
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![]() "Al Dykes" wrote My take on this is is ill informed. (b)Lots of countries (and many bright higb school kids) can make Sarin, and other nasty material. The stuff is very hard to distribute effectivlly, as shown by the Sarin attack in Japan, and the Christian cult in Idaho (?) that tried to spread biologicals in the public food supply, the handful of people that died in the antrax attacks, and the fact that the Sarin 155mm shell they found in Iraq caused littlre more than a headache. One country with a big stickpile is a problem, but not the end of the world. As it happens, Sarin in impure form breaks down quickly and it's difficult to make in pure form. Aum Shinrikyo found that out. The 155mm shell was a binary munition that depends on setback on firing to start the reaction of the two reagents and the spinning of the shell to get thorough mixing. Both were missing when the shell was used as a IED. While Sarin isn't very effective against MOPP'ed up troops, it's devastating against unprotected populations. : http://www.kdp.pp.se/chemical.html |
#7
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"Henry J Cobb" wrote in message
... http://www.nationalreview.com/kerry/...0406020904.asp Gen. Richard Myers, in a May 2003 briefing, explained that a nuclear bunker buster could minimize the threat from biological or chemical weapons at an enemy site. By the time the nuclear bunker buster is fielded, both Iran and North Korea will have nuclear armed missiles capable of at least striking their neighbors, so who exactly would you use the RNEP on? You're not going to find all of their launch locations before you strike and afterwards they have nothing to lose by launching. -HJC I am alone in being concerned that the US is spending substantial resources to develop war fighting nuclear weapons (not deterence) to use specifically against non-nuclear states? Is this the modern moral US? In terms of effectiveness I would ask if they could be used against deep installations. By this I would consider the deep mines at depths of 400m to 4000m which would be a logical place to store such WMD if one was threatened by such deep penetrating nuclear weapons. David Nicholls |
#8
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![]() "David Nicholls" wrote in message ... "Henry J Cobb" wrote in message ... http://www.nationalreview.com/kerry/...0406020904.asp Gen. Richard Myers, in a May 2003 briefing, explained that a nuclear bunker buster could minimize the threat from biological or chemical weapons at an enemy site. By the time the nuclear bunker buster is fielded, both Iran and North Korea will have nuclear armed missiles capable of at least striking their neighbors, so who exactly would you use the RNEP on? You're not going to find all of their launch locations before you strike and afterwards they have nothing to lose by launching. -HJC I am alone in being concerned that the US is spending substantial resources to develop war fighting nuclear weapons (not deterence) to use specifically against non-nuclear states? Is this the modern moral US? Please explain the intrinsic moral difference between destroying deep bunkers with an explosion caused by fissioning atoms as compared with doing so with chemical explosives ? There may well be practical reasons for the choice of one versus the other but dead is dead. Keith |
#9
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"David Nicholls" wrote in
: "Henry J Cobb" wrote in message ... http://www.nationalreview.com/kerry/...0406020904.asp Gen. Richard Myers, in a May 2003 briefing, explained that a nuclear bunker buster could minimize the threat from biological or chemical weapons at an enemy site. By the time the nuclear bunker buster is fielded, both Iran and North Korea will have nuclear armed missiles capable of at least striking their neighbors, so who exactly would you use the RNEP on? You're not going to find all of their launch locations before you strike and afterwards they have nothing to lose by launching. -HJC I am alone in being concerned that the US is spending substantial resources to develop war fighting nuclear weapons (not deterence) to use specifically against non-nuclear states? Is this the modern moral US? In terms of effectiveness I would ask if they could be used against deep installations. By this I would consider the deep mines at depths of 400m to 4000m which would be a logical place to store such WMD if one was threatened by such deep penetrating nuclear weapons. David Nicholls Any deep mine that had a nuclear explosion nearby deep underground would have it's shafts collapse,or become inaccessible,just as effective as destroying the WMD itself. They might even flood. -- Jim Yanik jyanik-at-kua.net |
#10
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In article , Jim Yanik
writes "David Nicholls" wrote in : "Henry J Cobb" wrote in message ... http://www.nationalreview.com/kerry/...0406020904.asp Gen. Richard Myers, in a May 2003 briefing, explained that a nuclear bunker buster could minimize the threat from biological or chemical weapons at an enemy site. By the time the nuclear bunker buster is fielded, both Iran and North Korea will have nuclear armed missiles capable of at least striking their neighbors, so who exactly would you use the RNEP on? You're not going to find all of their launch locations before you strike and afterwards they have nothing to lose by launching. -HJC I am alone in being concerned that the US is spending substantial resources to develop war fighting nuclear weapons (not deterence) to use specifically against non-nuclear states? Is this the modern moral US? In terms of effectiveness I would ask if they could be used against deep installations. By this I would consider the deep mines at depths of 400m to 4000m which would be a logical place to store such WMD if one was threatened by such deep penetrating nuclear weapons. David Nicholls Any deep mine that had a nuclear explosion nearby deep underground would have it's shafts collapse,or become inaccessible,just as effective as destroying the WMD itself. They might even flood. At one point, it was feared that an exploding nuke could send a stream of VERY hot gasses along tunnels, thus spoiling everyone's day. However, later modelling (and maybe even testing) revealed that an underground nuclear explosion in an area containing shafts and tunnels tends to crush them flat, thus sealing them and saving the rest of the complex further damage. So, the lesson appeared to be; don't build caverns, stick to tunnels and shafts. Of course, finding your way out after a strike might have been a problem...cue for even more SF stories about people trapped underground for generations... Cheers, Dave -- Dave Eadsforth |
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