Cincinnati Seven

April 2011 Vol. 66 No. 4

Legend has it that Cincinnati, like Rome, was built on seven hills. Contractor Midwest Mole Inc., Indianapolis, IN, is continuing the local history by constructing seven sewer tunnels in a landmark project that is challenging…

New Boring Record Set In Louisville

July 2009 Vol. 64 No. 7

After 35 working days of excavation, Ohio contractor Turn Key Tunneling Inc. had reason to celebrate. Their trenchless crossing beneath Interstate Highway 265 in Louisville, KY, had just been completed at an unprecedented bore length…

How It Works: Motorized SBU

May 2009 Vol. 64 No. 5

The Robbins SBU-M is a manned entry, hard rock boring machine for use on both long utility installations (300 feet and over depending on geology) and crossings with specific line and grade requirements.