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At one time or another, rock is a challenge to most contractors who do horizontal directional drilling (HDD). The degree of difficulty and the efficiency with which rock is penetrated involves many factors, including the size of the drill unit, method of drilling, downhole tools and the experience and capability of drilling crews.

Some of the most common questions owners and engineers have when considering pipe bursting are “what types of pipes can be burst?” and “what types of pipes can be installed by pipe bursting?” This article will provide insight into answering those questions as well as highlight some of the design and practical considerations that need to be accounted for on any pipe bursting project.

G-Series Excavators
The direct result of ongoing collaboration between excavator customers and Deere engineers, John Deere has launched three new G-Series Excavators featuring IT4-certified engines, more power and cab improvements to increase visibility.

When Gary Davidson, president and co-owner of DrillTech Inc., based in Clarksville, TX, reviewed the results of soil samples provided him by project owner, Regency Energy Partners, he felt confident the mainline natural gas pipeline project his company was hired to complete in Louisiana would be a fairly routine horizontal directional drill installation. At first glance, the only thing that Davidson felt may be somewhat of a challenge was the length.

What a difference six years makes.

In 2004, Michels Directional Crossings set a horizontal directional drilling (HDD) industry record for its completion of two parallel 7,080-foot-long, 8-inch diameter steel high voltage transmission lines beneath the Cooper River in Charleston, SC.

The McLaughlin Group has introduced two new cradle boring machines -- the first new models manufactured in this product category since the late 1960s.

The Association of Equipment Manufacturers (AEM) announces that a team of students from Miami Valley Career Technology Center in Clayton, OH, has won the 2011 AEM Construction Challenge presented by Volvo Construction Equipment.

The Association of Equipment Manufacturers (AEM) announces that a team of students from Miami Valley Career Technology Center in Clayton, OH, has won the 2011 AEM Construction Challenge presented by Volvo Construction Equipment.

The Water Environment Research Foundation (WERF), through the Endowment for Innovation in Applied Water Quality Research, is offering $100,000 to encourage researchers working in wastewater, water reuse, biosolids, stormwater, watersheds and other areas to pursue groundbreaking research.

The Water Environment Research Foundation (WERF), through the Endowment for Innovation in Applied Water Quality Research, is offering $100,000 to encourage researchers working in wastewater, water reuse, biosolids, stormwater, watersheds and other areas to pursue groundbreaking research.