The RMI defines standards for smelters, refiners and recyclers that participate in the Assurance Process. Our standards development process described in the RMI Standard and Assessment Criteria Development Procedure is guided by the ISEAL Standard Setting Code of Good Practice and includes extensive stakeholder consultations to ensure our standards are aligned with regulatory requirements, meet best practice expectations and are of high quality in a way that is verifiable and promotes the RMAP’s credibility and acceptance by our stakeholders.
In addition to the collaboration with industry experts and metal associations, our standards development process includes a public consultation on any major revisions. The RMI works with its multi-stakeholder Standards Advisory Group to review input received from stakeholders.
The full Assurance Standards Landscape graphic is available here.
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Each standard is regularly reviewed and updated. Current standards can be accessed here:
| Title | Languages | Relevant Regulations | Release Date | Recognized by | Effective Date | How to Request an Audit |
| Responsible Minerals Assurance Process, Tin and Tantalum Standard | Dodd Frank Act 1502; European Union Conflict Minerals Regulation | 12 June 2017 | London Metal Exchange | 1 June 2018 | If you want to undertake an assessment for the first time, please register your facility and submit the CIQ (Company Information Questionnaire) here.
| |
| Responsible Minerals Assurance Process, Tungsten Standard | Dodd Frank Act 1502; European Union Conflict Minerals Regulation | 1 December 2017 |
| 1 June 2018 | ||
| Responsible Minerals Assurance Process, Gold Standard | Dodd Frank Act 1502; European Union Conflict Minerals Regulation | 18 December 2017 |
| 1 June 2018 | ||
| Global Responsible Sourcing Due Diligence Standard for Mineral Supply Chains All Minerals |
| 15 December 2021 | London Metal Exchange | 1 January 2022 | To request an assessment please contact RMIassessment@responsiblebusiness.org.
| |
| Facility Standard for Social, Environmental, OHS and Governance Risks |
| 30 April 2025 |
| 30 April 2025 | ||
| Supply Chain Due Diligence Plus |
| 30 April 2025 |
| 30 April 2025 |
For further information on the RMAP, our Standards, procedures and tools, please visit our RMI Assessment Documents & Tools. For an overview of the main revisions to the RMAP Standards for Tin / Tantalum, Tungsten and Gold and their impact on smelters and refiners, please consult our 2017 Revisions Overview.
As of 1 January 2026, the RMI will no longer offer assessments against the following standards
- Cobalt Refiner Supply Chain Due Diligence Standard
- Joint Due Diligence Standard for Copper, Lead, Molybdenum, Nickel, and Zinc
- Global Workplace Responsible Sourcing Environmental, Health, and Safety Due Diligence Standard for Mica Processors
- ITA-RMI Assessment Criteria for Tin Smelters
