GeoStabilization International (GSI) is a premier design–build/warranty geohazard contractor serving the U.S. and Canada. We safeguard transportation, rail, utilities, and communities with emergency landslide repair, rockfall mitigation, slope stabilization, ground improvement, and foundation support. Our in-house engineers and rope-access crews mobilize quickly—often within 24 hours—and work in steep, remote, or limited-access sites using purpose-built rigs and technologies like the Soil Nail Launcher. Capabilities include soil nails and anchored walls, shotcrete, rock bolts/mesh and barriers, micropiles and tiebacks, plus compaction, permeation, and jet grouting.