Travertine Technologies, a startup specializing in carbon-negative critical element production, has announced a partnership with Sabin Metal Corp., a precious metals refiner in North America, to build a demonstration plant in Rochester, New York. The Travertine Process, combining salt-splitting electrolysis, caustic direct air capture, and mineralization, will convert gypsum and CO2 into sulfuric acid, green hydrogen, and calcium carbonate. This carbon-negative process aims to provide sustainable solutions for Sabin Metal's operations, with potential for future expansion into green hydrogen production. The demo plant, supported by NYSERDA funding and venture debt from Builders Vision, is set to be operational by mid-2025, with the capacity to upcycle waste gypsum, remove carbon dioxide from the atmosphere, and produce essential materials. The partnership exemplifies a commitment to environmental responsibility, circularity, and innovation in critical element production, with a focus on decarbonization and sustainability across industries.