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On Wed, 2 Jun 2004 22:41:09 -0400, Kevin Brooks wrote:
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. Dunno about Mount Weather or the Congressional Continuity of Government site located under the Greenbriar resort in Sulphur Springs, West Virginia, but Raven Rock (Site R) is dug into part of the Catoctin anticline (the site is actually in Pennsylvania, just north of the Maryland border.) The Catoctin anticline is composed of late Precambrian basalt lava flows that later metamorphosed into the characteristic Catoctin "greenstone" (metabasalt), which is considerably harder than limestone. ljd |
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![]() "Howard Berkowitz" wrote in message ... In article , wrote: On Wed, 2 Jun 2004 22:41:09 -0400, Kevin Brooks wrote: 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. Dunno about Mount Weather or the Congressional Continuity of Government site located under the Greenbriar resort in Sulphur Springs, West Virginia, but Raven Rock (Site R) is dug into part of the Catoctin anticline (the site is actually in Pennsylvania, just north of the Maryland border.) The Catoctin anticline is composed of late Precambrian basalt lava flows that later metamorphosed into the characteristic Catoctin "greenstone" (metabasalt), which is considerably harder than limestone. And let me make clear I wasn't saying it had to be granite specifically, but other hard rock. Greenbriar is under a lawn--it was basically just a fallout shelter. Mount Pony (former Federal Reserve emergency storage site, and reportedly used to also provide some alternate command space) , just down the road from where I live, has recently been largely dug up (for some unknown reason), and I did not see much evidence of largescale rock removal to get the job done. As far as I can tell from gandering at a geological map, Mount Weather lays west of the Blue Ridge in what is termed as the "Valley and Ridge" geology of Virginia--predominantly limestone, and typically Karst (which might explain the mentions in various Mount Weather sites of supporting underground "ponds"). And the Greenbriar facility is neither "under the lawn" (it is under the West Virginia Wing extension built onto the hotel, and was built while the new wing was being added); nor was it necessarily "basically just a fallout shelter" --top cover for the entrance tunnel is listed as being some three feet of concrete topped by a varyingdepth of soil ranging from 25 feet to a maximum of 100 feet. Brooks |
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