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News from USA

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Rockslide closes Zion-Mt. Carmel Highway and tunnel at Zion National Park
3news   03 March 2019   USA   Utah  
Damage to the roadbed on the Mount Carmel Highway seen on Sunday, March 3, 2019. (Zion National Park photo)
<p>SPRINGDALE, UTAH (KSNV) &mdash; Heavy rainfall prompted a rockslide in Zion National Park on Saturday night. As a result, some popular canyoneering routes have been closed indefinitely.<br />The Zion- Mount Carmel Highway was closed after reports of an ...
Seattle tunnel subcontractor cited for underpaying workers $370,000
KOMONEWS.com   27 February 2019   USA   Seattle  
<p>SEATTLE - A company contracted to haul away dirt from the state Route 99 tunnel excavation has been cited for underpaying workers by more than $370,000.<br />While Bertha was drilling underground for the recently-opened SR-99 tunnel, Glacier Northwest was ...
Filed under: Construction News
Ring of Fire WARNING: When will earthquake strike California - when will BIG ONE hit?
Express   11 February 2019   USA   California  
<p>CALIFORNIA will eventually be struck by a huge earthquake that could have catastrophic effects. But when will the Big One hit?</p>
Polar vortex reportedly causes ‘frost quakes’ in Chicago: What is the geological phenomenon?
Fox News   01 February 2019   USA   Chicago  
<p>Freezing temperatures in Chicago — which at one point Thursday were said to be lower than those in Alaska and Antarctica — have reportedly caused a loud, ground-shaking phenomenon to occur: so-called “frost quakes.”<br>Chicago residents reported hearing ...
Earthquake faults crisscross LA. Is it safe to tunnel here?
Los Angeles Curbed   16 January 2019   USA   Los Angeles  
The underground portion of the soon-to-open Crenshaw/LAX Line is located in a liquefaction zone, where engineers must contend with damp, sandy soil that can destabilize in an earthquake. By Liz Kuball
<p>In December, tech billionaire Elon Musk and his tunneling startup, The Boring Company, unveiled a mile-long tunnel beneath Hawthorne&mdash;a prototype of an undergroundtransportation system called &ldquo;Loop.&rdquo;<br />Musk has repeatedly suggested that ...
An old bridge goes out with a bang
The Washington Post   15 January 2019   USA   New York  
Mike Segar/Reuters
<p>A big chunk of an old New York bridge went down in history Tuesday as explosives demolished the eastern part of the Tappan Zee Bridge.<br />The bridge has been replaced by the Governor Mario M. Cuomo Bridge, which carries Interstate 87 traffic over the ...
New Seattle tunnel designed to ride out catastrophic 9.0 quake, DOT says
KOMONEWS.com   08 January 2019   USA   Seattle  
<p>SEATTLE &ndash; The new Highway 99 tunnel opening in early February has been constructed to withstand a powerful once-in-2,500-years earthquake of roughly 9.0 magnitude off the Washington coast, state Department of Transportation officials said Monday.<br ...
Filed under: Construction News
America's first public earthquake-warning app unveiled in Los Angeles
The Guardian   04 January 2019   USA   California  
Photograph: Richard Vogel/AP
<p>Los Angeles has unveiled the US&rsquo;s first publicly available earthquake early-warning app, a development seismologists hope will move cities across the west coast to invest in wide-scale alert technology.<br /><br />ShakeAlertLA uses mobile app technology ...
Monument Valley a geological gift that keeps giving
The Post and Courier   29 December 2018   USA   Arizona-Utah  
A geometric jumble of rock in lowering sunlight
<p>Like one’s first sight of the sea, a sky-piercing peak or soaring redwood forest, this iconic red-sand desert region straddling the Arizona-Utah border is indelible, a marvel to behold. Famed for the towering sandstone buttes of Monument Valley Navajo Tribal ...
A First Glimpse Of Hanford’s Tunnel 2 As Work Continues To Prevent Another Hazardous Collapse
Jefferson Public Radio   20 December 2018   USA   Washington  
Hanford workers pump grout into a port on Tunnel 2. The tunnel is being sealed up so to lessen the risk of collapse that could endanger workers and the public. CREDIT: ANNA KING/N3
<p>In the middle of Washington&rsquo;s desert, there&rsquo;s a tunnel that stretches a third of a mile underground.</p> <p>It&rsquo;s full of railcars with chemical and radioactive waste. Now, contractors at the Hanford cleanup site are racing to fill the ...
Filed under: Construction News