DSI Tunneling-min

The acquisition of DSI Tunneling enhances Jennmar’s ground support offering. (Photo: DSI Tunneling)

Frank Calandra, Inc. announced that Jennmar of Kentucky, Inc. has purchased DSI Tunneling LLC. 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. The company said DSI will be renamed JENNMAR Specialty Products – Louisville, LLC in the coming weeks. The acquisition will enhance Jennmar Civil’s offering of structural steel arches, liner plate, lattice girder, and accessories to the mining, tunneling, and civil industries.

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

Jake Hunter, general manager for Jennmar Civil will work with David Harvaneck, general manager for DSI Tunneling LLC, to ensure an efficient integration of DSI’s customer base and product lines. “This addition brings to us a top-notch facility, increased production capacity, and an experienced team of engineers, sales, and operations professionals,” Hunter said. “It’s an honor to be part of a team continuing a century-long legacy in tunnel support system design and manufacturing.”