U.S. Army Corps of Engineers 'How Pier Drillers Inc
Tulsa Pier Drilling provides truck and track-mounted drilling solutions from 18-inch to 12-feet in diameter foundation drilling up to 130 feet deep. U.S. Army Corps of Engineers "How-to": Drilled Concrete Piers Hoette Concrete doing Drilled Piers. Pier drilling in limestone with monster digger ( Taurus ) Foundation Piers Drilling Pier Drillers, located in Oklahoma City, OK crane rig walk ...