Westwin Elements’ $502M Mississippi nickel refinery: project and process notes for engineers
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
Westwin Elements will invest $502 million over five years to build a commercial-scale Class 1 nickel refinery at the Belwood Industrial Site in Natchez, Mississippi, targeting 18,000 tonnes per year of output in its first phase with commissioning in 2029. The plant will scale up nickel carbonyl refining technology proven at Westwin’s 20 t/y Lawton, Oklahoma demonstration facility, with a completed Bankable Feasibility Study, a long-term site lease, and binding feedstock and offtake agreements already secured. Located adjacent to Natchez’s inland port and regional transport links, the project is expected to create 134 full-time jobs at an average salary of about $84,000.
Technical Brief
- Nickel carbonyl refining at Natchez scales up technology proven at Westwin’s 20 t/y Lawton, Oklahoma plant.
- Lawton demonstration campaigns have already produced on-spec Class 1 nickel powder, de-risking process performance.
- A completed Bankable Feasibility Study underpins the Natchez development and associated capital deployment schedule.
- Long-term lease of the Belwood Industrial Site secures tenure for multi-phase refinery expansion and utilities planning.
- Binding feedstock agreements lock in nickel-bearing input streams, reducing supply risk during early operating years.
- Parallel binding offtake contracts provide committed outlets for Class 1 nickel powder, supporting project financeability.
- Immediate proximity to Natchez’s inland port enables barge-based bulk movements, easing heavy-haul road dependence.
- The refinery’s output targets defence, aerospace, advanced manufacturing, specialty alloys and energy-sector supply chains.
Our Take
Westwin Elements already has a non-binding offtake MOU with Brazilian Nickel for Mixed Hydroxide Precipitate, so the Natchez nickel refinery in Mississippi is likely being positioned as a downstream destination for that feed rather than a standalone greenfield bet.
The Lawton, Oklahoma demonstration plant’s 20 t/y capacity underscores that Westwin is scaling up from a very small pilot base to a full commercial refinery by 2029, which will put execution risk on process upscaling and commissioning timelines compared with more established nickel processors in our mining project coverage.
Westwin’s parallel work with Deep Sea Minerals on processing Pacific polymetallic nodules signals that the Natchez facility could eventually be configured for unconventional nickel and cobalt feedstocks, giving it optionality beyond traditional laterite or sulphide concentrates tracked in other nickel ‘critical mineral’ pieces in our database.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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