Get reliable, Columbia-compatible parts for surface mining

Sourcing the right parts shouldn’t slow you down

Lawton AMSCO^® understands how costly downtime can be. Since Columbia Steel exited the market, it’s been harder than ever to find dragline rigging, bucket components, and chain replacements that hold up in the field. That’s why we stepped in.

Built to Columbia Steel standards—and beyond

AMSCO^® holds the intellectual property rights to Columbia Steel patterns and product concepts, including Columbia Chain, Columbia Rigging, and Columbia Chain & Rigging. We engineer and manufacture parts to match and exceed those original specs, with superior performance and fit.

• Dragline rigging assemblies
• Spread-bar and taper-back bucket assemblies
• Chain links, shackles, clevises, and pins
• Custom and hardfaced wear components
• Parts engineered for phosphate and coal applications

See our mining parts in action

Why choose Lawton AMSCO^®

• Over a century of foundry expertise
• U.S.-based production for reliable turnaround
• Backed by Columbia Steel’s legacy of precision
• Custom engineering available on demand