Tungsten

Tungsten (W) is one of the four 3TG conflict minerals, extracted primarily from wolframite and scheelite ores. Tungsten is used in electronics (vibration motors in mobile phones, hard drive components), cutting tools, light bulb filaments, military applications (ammunition), and jewelry. Significant sources include China (largest global producer), DRC, and Rwanda. Tungsten is one of the less-publicized 3TG minerals but remains subject to full conflict minerals due diligence requirements under both Dodd-Frank and EU Regulation (EU) 2017/821.

Dodd-Frank Act Section 1502; Form SD Item 1.01(d)(3); Regulation (EU) 2017/821, Annex I.

Tungsten supply chains are dominated by Chinese smelters, which presents a different risk profile from the DRC focus of other 3TG minerals. Companies must still verify RMAP status for all tungsten smelters identified in their supply chain. DRC and Rwanda tungsten, while smaller in global volume, carries the highest conflict risk and requires the most rigorous upstream verification. The RMAP conformant list for tungsten is maintained by RMI.

A smartphone manufacturer identifies tungsten in its supply chain through vibration motors sourced from Asian suppliers. CMRT data shows 3 tungsten smelters: 2 in China (RMAP conformant) and 1 in Vietnam (RMAP active). The manufacturer verifies this data against the Standard Smelter List in CMRT 6.6 and includes smelter details in its Form SD filing.