- Akkerman Inc.
- Manufactures, sells and leases, new and used trenchless tunneling equipment for microtunneling, pipejacking, guided boring, and earth pressure balance machines, including haul units, sliplining, and conveyer belts.
- Barbco, Inc.
- Manufacturer of horizontal earth boring machines, directional drills, tunneling machines, auger and other related products for use in underground applications.
- Consolidated Carbide, Ltd.
- Specialized in the engineering and manufacturing of quality cutting tools for the trenching and trenchless industry.
- Electric Eel Mfg.
- Supplier of quality sewer and drain cleaning equipment, drum machines, water jetters, gasoline powered municipal sewer cleaners, and pipeline inspection systems.
- McElroy
- Manufacturing and engineering firm with a complete range of fusion equipment including pitbulls, tracstars and our original wheeled units, polyethylene pipe fusion machines.
- McLaughlin Boring Systems
- Provider of trenchless products to the utility construction market, auger boring machines, vacuum excavators, and utility locators.
- Melfred Borzall, Inc.
- Designs, sells and services tools for horizontal drilling rigs.
- merican Augers Inc.
- Manufacturer of underground technology equipment, which includes state-of-the-art horizontal directional drills, earth boring machines, mud pump and cleaning systems, oil and gas drill rigs, and various product tooling or accessory items.
- Pipeline Roller Systems, Inc.
- Manufactures a complete line of pipe travel systems for the pipeline and horizontal directional drilling industries.
- Porta-Mole
- Manufacturing, research and development of earth boring equipment.
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