A spider that can crawl up and down the hills below the Rims is performing a series of tests in the the lead-up to reconstruction of Zimmerman Trail. Dan Nebel, a senior geologist with Terracon, said ...

These walking excavators can safely and efficiently operate on rocks, in mud, snow and water up to five feet deep and can install SuperNails, SuperMicropiles, rock bolts and tension anchors on slopes ...

Can a mini excavator really be the best trail maker? We put it to the test and explore how it handles shaping, clearing, and ...