Brazilian tin-producing company, White Solder, has been accused of acquiring a mineral illegally mined in the Yanomami Indigenous Territory in the Brazilian Amazon. White Solder has supplied hundreds of metric tons of tin to companies with U.S. Department of Defense contracts, according to an investigation by Repórter Brasil. White Solder, which describes itself as one of the world’s largest tin producers, supplied at least 525 metric tons of tin to U.S.-based Indium Corporation between May 2023 and August 2025, according to records analyzed by Repórter Brasil. Indium Corporation in turn supplied solder to Raytheon, a major U.S. defense contractor that manufactures military technologies including radar and precision-guided missiles. White Solder also reportedly supplied at least 2,400 metric tons of tin to Nathan Trotter, a U.S. manufacturer of tin and solder alloys between 2021 and 2025. In 2024, the U.S. Department of Defense awarded Nathan Trotter a $19 million contract to build a tin smelting, refining and recycling facility in Pennsylvania, Repórter Brasil reported. According to a release from the Department of Defense, the investment was intended to counter, “Chinese efforts to monopolize the global supply, as well as mitigate smelting supply chain vulnerabilities.” “The US’s expanding need for raw materials to underpin its military will lead to further harms associated with mining, both illegal and legal unless safeguards and due diligence are put in place and followed,” Emily Iona Stewart, head of policy and advocacy with the U.K.-based NGO Global Witness, told Repórter Brasil. In August 2026, a Brazilian federal…This article was originally published on Mongabay
