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Hanson Pipe & Precast has appointed Cory R. Mayo as its vice president of operations. Mayo will succeed Greg Minteer, who is retiring in the first quarter of 2015 following 33 years of service to the company.

To meet the required EPA Clean Air Act emission standards for diesel engines, Xylem has introduced new Tier 4 engines in their Godwin dewatering pumps to help reduce air pollution by minimizing particulate matter (PM) and nitrogen oxides (NOx), as well as delivering enhanced engine control and reduced engine noise.

Geotechnology Inc., a leading provider of geotechnical and environmental engineering, geophysics, water resource management, materials testing and drilling services, announced the retirement of Dominic Grana on Dec. 31, 2014.

EDITOR’S NOTE: In 2016, NASSCO will celebrate its 40th year of setting standards for the assessment and rehabilitation of underground infrastructure. As we look forward, we also look back to those who have made significant contributions and have impacted the continued acceptance and use of trenchless technologies.

To provide a foundation for sustainable growth in a growing market, WHC Inc. has announced plans to transition ownership to its senior management and equity partner, Alvarez & Marsal Capital Partners (AMCP).

NASSCO (National Association of Sewer Service Companies) continues to have a positive impact on the nation’s sanitary sewer systems by establishing and improving standards for the assessment, maintenance and rehabilitation of underground infrastructure.

Much of the country, indeed the world, is celebrating the fall of oil prices. The immediate and most obvious benefit is relief from high fuel prices.

WNR Systems has developed a machine that uses the latest technology in fiberglass to construct a joint free, continuous pipe, directly on the job site. The machine can deliver any length or wall thickness cured and ready for use in less than two minutes.

The pipe will have a glass-like smoothness internally, resulting in less surface-friction and a reduction in hydraulic power and pump sizing. In addition, shut-off stations, inspection openings, and T-sections and bends may be introduced at any stage of production.

Advance Metalworking Co., www.advancemetalworking.com

American Augers, www.trencor.com

American Pipeline Contractors Assn., www.americanpipeline.org

Applied Felts Inc., www.appliedfelts.com

Arntzen Corp., www.arntzenrolling.com

Avanti International, www.avantigrout.com

Bentonite Performance Minerals LLC, www.halliburton.com

Bit Brokers, www.bitbrokers.com

BKW Inc., www.bkwinc.com

Copperhead Industries, www.copperheadwire.com

Dam-It Dams, www.damitdams.com

Ditch Witch, www.ditchwitch.com

Doosan Portable Power, www.doosanportablepower.com

The digital edition of Underground Construction, January 2015, Vol. 70, No. 1.