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Engineers at Marl Technologies with their undersea drill
Miscellaneous

MARL Designs Geotechnical Drill Rig that Will Drill in 3,000-m Deep Water

April 29, 2011 rockman Miscellaneous Comments Off on MARL Designs Geotechnical Drill Rig that Will Drill in 3,000-m Deep Water

That’s right, it can operate in 3,000 meters of water, and it can drill and sample up to 150-meters below the ocean floor while being operated remotely from a ship above the drill site. [Source: […]

Failures

Drilled shaft rig falls into hole – Iowa

June 3, 2008 rockman Failures Comments Off on Drilled shaft rig falls into hole – Iowa

On May 15 a drilled shaft rig operated by Mid America Drilling Corp was nearly swallowed by the 9-ft diameter hole it was drilling for a cell tower foundation near Harlan, Iowa. Fortunately nobody was injured and the truck did not suffer any significant damage.

In Arizona, the standard of practice is to use a temporary surface casing to prevent dangerous failures like that. I once saw pictures of a drilling contractor superindendent almost get sucked into a collapsing shaft, even with the temporary casing. Pretty scary stuff. Source: Harlan Tribune. (Photo by Samantha Bruck) 

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Drill rig at Atlantic Yards project showers pedestrians with debris
Failures

Drill Rig Showers Debris on Pedestrians, Injuring Two in NY

July 7, 2011 rockman Failures Comments Off on Drill Rig Showers Debris on Pedestrians, Injuring Two in NY

A drill rig had some type of failure or malfunction in Brooklyn NY, and showered pedestrians with golf ball sized rocks, earth and debris. There are few details on the incident or the type ow […]