JENNMAR purchases DSI Tunneling, LLC

press release

December 12, 2023

JENNMAR of Kentucky, Inc. has purchased DSI Tunneling LLC (DSI). DSI specializes in the design and manufacture of lattice girders, steel ribs and liner plate. DSI will continue to operate its facility in Louisville, Kentucky. In the coming weeks, DSI will be renamed JENNMAR Specialty Products – Louisville, LLC.

This acquisition will enhance JENNMAR Civil's offering of structural steel arches, liner plate, lattice girder and accessories to the mining, tunneling, and civil industries.

Jake Hunter, JENNMAR civil general manager, will be working with David Harvaneck, DSI Tunneling LLC, general manager, to ensure an efficient integration of DSI's customer base and product lines.

"We look forward to welcoming all DSI’s teammates to the JENNMAR family. This acquisition is very exciting for us as we expand our product offering to the civil and tunneling markets in the United States and Canada. We look forward to building on DSI’s 100 years of experience and delivering cost efficient solutions to our customer base,” said Tony Calandra, group president of Frank Calandra Inc. and Calandra Group, LLC.

“We're excited to announce a significant step for JENNMAR Civil in the civil tunneling market, with the acquisition and integration of the historic DSI Louisville Plant. This addition brings a top-notch facility, increased production capacity, and an experienced team of engineers, sales and operations professionals. It's an honor to be part of a team continuing a century-long legacy in tunnel support system design and manufacturing. This move reflects our commitment to industry excellence and positions us for continued success and innovation with underground support systems,” said Hunter.

“We look forward to joining JENNMAR Civil. I believe our people, processes, and products will fit well within JENNMAR. We have a common focus of providing the best solutions for tunneling in North America,” said Harvanek.

Read more about JENMAR here

Read more about DSI here 

Photo courtesy of JENMAR.


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