The London Metals Exchange (LME) announced in April 2018 that it would require all producers to comply with the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals (in English), for all metals traded on the LME.
This will mean that 75% of metals traded will have to meet OECD due diligence requirements.
The 3rd Edition of the OECD Due Diligence Guidance was published in April 2016. The updated version clarifies that the Guidance provides a framework for detailed due diligence as a basis for responsible supply chain management of minerals, including tin, tantalum, tungsten and gold, as well as all other mineral resources.
In addition to the 35 OECD Members, 8 non-Members, namely Argentina, Brazil, Colombia, Costa Rica, Lithuania, Morocco, Peru and Romania, adhered to the Council Recommendation.