Professional Service Industries Inc. (PSI) promoted Jamshid Abedi to staff specialist in its Houston Construction Services Department. He previously served as engineering technician.

Abedi earned his Master of Planning and Bachelor of Architecture from the University of Nebraska. He earned his pre-architecture degree from Roosevelt University. He has been a member of the PSI team since 2013. 800.548.7901,

Ritchie Bros., the world’s largest industrial auctioneer, has hired Terry Dolan to serve as company president, U.S. and Latin America, effective May 20.

Miller Pipeline, one of the nation’s premier natural gas distribution, transmission pipeline and utility contractors and a wholly owned subsidiary of Vectren Corporation, acquired A & B Trenching Co. Inc. in a strategic move to expand its markets and strengthen its position as a leader in the underground construction industry.

Ditch Witch of Ohio, Western Pennsylvania and Western New York and Ditch Witch of Kentucky recently merged and will now be known as Ditch Witch Mid-States. The two underground equipment institutions were founded nearly 50 years ago.

Advanced Drainage Systems Inc.,

Al Asher & Sons Inc.,

American Augers,

American Pipeline Contractors Assn.,

Arntzen Corp.

Bit Brokers,

BITCO Insurance Companies

BKW Inc.,

BlueGreen Municipal Solutions,

Caterpillar Inc. (CATBC)

Clock Spring Co.,

Digital Control Inc.,

Ditch Witch

Duke's Root Control,

E&M Supply Group,

The digital edition of Underground Construction, June 2015, Vol. 70, No. 6.

HammerHead, a Charles Machine Works Company, announced that Brian Metcalf will be departing to assume the role of chief executive officer at the Ring-O-Matic organization based in Pella, IA.

=The Occupational Safety and Health Administration issued on May 1 a final rule to increase protections for construction workers in confined spaces.

Hyundai Construction Equipment Americas Inc. announced the appointment of Ernesto Lopez as Service Manager – Construction Equipment.

Martin Edwards, vice president of legislative affairs, of the Interstate Natural Gas Association of America, lauded the House Resource Committee for advancing H.R. 2295, a bill to amend the Minerals Leasing Act allow natural gas pipelines to be treated like other infrastructure – including electric lines, water lines and communications facilities – when traversing lands administered by the National Park Service. The committee vote was 21 to 15.

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