Hopes are pinned on the Cotswold Geotechnical Holdings case clarifying the scope of the Corporate Manslaughter Act – Source: HR Magazine (UK) Seismicity Induced by Geothermal, Oil and Gas, CO2 Sequestration – Source: Geology.com Clark […]
TRB’s National Cooperative Highway Research Program (NCHRP) Report 663: Design of Roadside Barrier Systems Placed on MSE Retaining Walls explores a design procedure for roadside barrier systems mounted on the edge of a mechanically stabilized […]
ADAMA Software has released update 11 for their Mechanically Stabilized Earth retaining wall design software, MSEW 3.0 as of October 23, 2010. It appears that the changes mainly involve adding the updated AASHTO LRFD seismic […]
ADAMA Software has released update 13.1 for their Mechanically Stabilized Earth retaining wall design software, MSEW 3.0 as of August 30, 2011. Some of the design methodology changes in the 2009 FHWA manual for MSE […]
Time again for a summary of changes to ASTM standards that may be of interest to geotechnical engineers, engineering geologists and those in geoconstruction and even lab testing or CQA. This month there is a new standard for a new type of geomembrane, revisions to standards relating to ultrasonic testing and general nondestructive testing terminology, evaluation of particle shape in aggregates, and re-approval of standards relating to non-asbestos fiber-cement based products. Click through for more.
On October 15, a major milestone was reached on Europe and the World’s longest rail tunnel. The Gotthard Base tunnel under the Swiss Alps will form a high speed rail link between northern and southern […]
A bridge near Brewster, Minnesota collapsed under the weight of a 40-ton asphalt milling machine that had nearly completed the milling operation. The bridge carries Nobles County 1 over Elk Creek. The operator of the […]
As 33 trapped miners waited more than 2,000-ft underground for their rescue, a whole team of Chilean government officials, mining engineers, equipment manufacturers and of course drillers came together get the job done. Jeff Hart, a driller from Denver, Colorado was one of the stars of the day. Hart was in Afghanistan drilling deep water wells when he got the call and hopped on a plane. He works for Kansas-based Layne Christensen, and along with 3 other Layne employees, he manned the Schramm T130 drill rig that was part of “Plan B” that eventually became the shaft from which the trapped miners were rescued.
On the drilling platform overseeing the drilling was James Stefanic of Layne, and crew members Matt Staffel, Doug Reeves and Jorge Herrera. The rig and I presume some of the support equipment was owned by Layne’s Latin America affiliate, Geotec Boyles Bros, SA. The drill bits were from Center Rock, Inc. of Berlin, Pennsylvania. The Center Rock CEO, Brandon Fisher, was on site throughout the operation as well.
Read on for more info, photos, video and links on the drilling, drillers and geology of the Chile Mine rescue.
Mohr Circle Application – Source: Geoengineer Group on Yahoo Groups Group member Mehdi has written an application for drawing Mohr Circles and extracting the intercept with ordinate and slope of the tangent line with VB […]
GPS manufacturer Garmin has announced a small, $23 device that act as a beacon, broadcasting a wireless signal to compatible devices that they are near a Geocache or give them clues along the way. It […]
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