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Mastenbroek Ltd.(Equipment Spotlight: TRACK TRENCHERS & ROCK SAWS)

With the HRT series (Hard Rock Trenching), Mastenbroek has reversed conventional rock saw trenching by engineering the digging boom at the front of the trencher. The patented HRT design has a reciprocating boom with an endless reverse cutting chain that is pushed into the bottom of the trench to create an undercut. The cutting head is then progressively raised through the material until it breaches the surface, at which point the boom is then lowered and the cycle restarts to excavate the desired depth and width. Photo shows the model HRT 25 ...

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