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Tunnels and Shafts

Over the decades, we have built tunnels for sewers, water mains and transportation, including pedestrians, autos and rail, mechanical piping, hydro electric penstocks and even electrical power transmission. These tunnels have been built in solid rock, mixed ground conditions and soft soils.

Reynolds is experienced with tunnels from 4 to 30 feet in diameter and has constructed shafts up to 80 feet in diameter and over 200 feet deep, utilizing a variety of ground support methods.

Reynolds's diverse fleet of tunneling equipment and methods include:

Tunnel boring machines (TBM)

Road headers

Digging shields

Rock drills

Hand-mining techniques

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