A network of non-governmental organisations publishes long-form investigations, country indices and policy research on the metals-and-mining sector. Their reports and rankings are referenced inputs to OECD due-diligence guidance, EU Conflict Minerals and Battery Regulation discussions, lender ESG frameworks (Equator Principles, IFC Performance Standards) and investor stewardship policies. Listed below, alphabetical by short name, are the organisations most often cited in published metals-sector due-diligence work. Each entry cites the organisation's own about-page.
On 22 September 2025, Human Rights Watch submitted formal comments directly addressing the disclosure guidance of the London Bullion Market Association, arguing that new industry disclosure requirements could disrupt abusive armed groups' trade in gold (Human Rights Watch, Submission re: the Disclosure Guidance of the London Bullion Market Association). The organization's companion statement cites a 2020 investigation in which a 17-year-old boy in Venezuela's Bolivar state told researchers he witnessed armed-group members amputate both hands of a miner accused of stealing gold, and states that summary executions and forced child labor by armed groups persist in the region as of the 2025 publication (Human Rights Watch, New Industry Requirements Could Disrupt Abusive Armed Groups' Trade in Gold). HRW's central policy argument is that public disclosure of refiners' gold supply chains — the exact mechanism embedded in the LBMA's Gold Bar Integrity Database mandatory-compliance track for 2027 — could help detect and diminish illegal supply chains feeding these abuses.
HRW's 24 November 2020 report, Sparkling Jewels, Opaque Supply Chains, scrutinized and ranked 15 major jewelry companies on efforts to prevent human rights abuses in gold and diamond supply chains between 2018 and 2020, following up on the organization's 2018 report The Hidden Cost of Jewelry (Human Rights Watch, Sparkling Jewels, Opaque Supply Chains). Recommendations directed at these companies included annual public reporting on human rights due diligence steps, publication of the names of gold and diamond suppliers, unannounced mine-site visits, and requiring suppliers — particularly gold refiners and diamond cutters and polishers — to provide credible evidence of due diligence rather than simple supplier assurances (Human Rights Watch, Sparkling Jewels, Opaque Supply Chains). The original 2018 report, The Hidden Cost of Jewelry, documented child injury and death in small-scale gold and diamond mining pits, forced displacement of Indigenous peoples near mines, and conflict-related abuses by armed groups profiting from gold and diamond extraction, based on interviews with victims and written exchanges with 13 major jewelry and watch brands (Human Rights Watch, The Hidden Cost of Jewelry).
Throughout 2025, HRW escalated its position from documentation to explicit regulatory advocacy. In a 20 February 2025 statement, HRW argued that greater 2025 mining demand requires new protections, explicitly criticizing industry-led voluntary standards — even robust ones such as the Initiative for Responsible Mining Assurance (IRMA) — for risking glossing over human rights and environmental harm without transparent, detailed company-level performance analysis (Human Rights Watch, Global Demand for Minerals Requires New Mining Protections). On 6 May 2025, HRW and Climate Rights International submitted joint recommendations to the UN special rapporteur on human rights and climate change, drawing on documented abuses in mining in Guinea, Indonesia, Panama, the United States, and Zambia to argue that robust national mining regulation — not investor-state dispute mechanisms — is the most important protection for affected communities (Human Rights Watch, Competition for Minerals Should Respect Rights and the Environment). By 17 December 2025, HRW explicitly backed the initiative for a global mining treaty, calling for mandatory rules covering both industrial and small-scale mining operations, and cited ongoing documented violence in Peru, Zimbabwe, and the Central African Republic alongside Venezuela (Human Rights Watch, Will Governments Move to Address Mining Abuses?).
Global Witness's 2014 whistleblower report alleged that Dubai-based Kaloti Jewellery International, one of the world's largest gold refiners, breached international anti-money-laundering rules, specifically failing to report over $5 billion in potentially suspicious cash transactions in 2012, with the report noting a “substantial risk” that conflict gold entered the refiner's supply chains even though no direct evidence of conflict-gold sourcing was found (Mining.com, Dubai Refiner Responds to Conflict Gold Charges, citing Global Witness findings). A separate 18 July 2017 Global Witness investigation documented how a mining company in eastern Democratic Republic of Congo ceded roughly one-third of its gold production — potentially worth tens of thousands of dollars per year — to the son of a senior Congolese army Brigadier-General, in apparent evasion of a Congolese Mining Code provision banning direct military involvement in mining (Global Witness, Senior Congolese Army Officer Receiving Major Slice of Gold Production from Mining Company). The organization's due-diligence template, Do No Harm, sets out five required components for companies sourcing from conflict-affected supply chains: a conflict-minerals policy, supply-chain risk assessments grounded in on-the-ground research, remedial action for identified problems, independent third-party audits, and public reporting (Global Witness, Do No Harm due-diligence guidance).
Public Eye (formerly the Berne Declaration) published “A Golden Racket” in 2015, documenting that Switzerland's largest gold refinery purchased gold extracted by children in Burkina Faso, where the report found 30 to 50 percent of the artisanal-mining labour force were children working 12-hour shifts without safety equipment, in conditions the International Labour Organisation classifies among the “worst forms of child labour” (Public Eye, Largest Swiss Refinery Purchases Gold Extracted by Children). The report's core finding was that voluntary due-diligence measures were not working: companies ought to know and verify the source of their gold, but the investigation revealed major shortfalls — or deliberate blind spots — in the refinery's human-rights due diligence and its efforts to trace the true origin of the gold it refined (Public Eye, A Golden Racket). A related Public Eye investigation examined the “true source of Switzerland's ‘Togolese’ gold,” documenting how gold recorded as originating in Togo for customs purposes was traced back to different underlying source countries, illustrating a specific commodity-laundering technique used to obscure origin in trade statistics (Public Eye, The True Source of Switzerland's “Togolese” Gold).
Global Witness's investigative model has extended beyond precious metals into critical minerals for the energy transition. An April 2026 Global Witness investigation into a manganese mine in Ghana — a material critical to electric-vehicle battery technology — documented meetings with more than 150 people living near the mine, finding chronic health problems, poisoned water supplies, and communities afraid to eat dust-covered crops, while the mine's own disclosed 2026 production target of 10 million tonnes of ore implies roughly triple the associated waste volume of its 2024 baseline (Global Witness, Murky Manganese report, April 2026). The report's recommendations mirror the organization's longstanding conflict-minerals due-diligence template — calling for guaranteed regular ongoing surveillance of community health and enforcement of existing legal instruments — demonstrating continuity in methodology as Global Witness's mandate expands from 3TG conflict minerals to the broader critical-minerals complex driving the energy transition (Global Witness, Murky Manganese report, April 2026).
The EITI Standard 2023 requires implementing countries to disclose all material payments by oil, gas, and mining companies to governments, and to disclose how they monitor and verify the accuracy of production and export data typically sourced from the companies themselves (EITI, EITI Standard 2023 — Summary of Changes). Critically for metals traceability, the 2023 Standard specifically requires an estimate of production and exports resulting from artisanal and small-scale mining to be disclosed alongside industrial-scale figures — formally bringing the informal mining sector into the transparency framework rather than treating it as an unmeasured residual (EITI, EITI Standard 2023 — Summary of Changes). EITI's requirements framework mandates that implementing countries disclose material payments and revenues to a wide audience in a publicly accessible, comprehensive, and comprehensible manner, with a formal country validation process assessing compliance (EITI, EITI Requirements).
Publish What You Pay (PWYP), the global civil-society coalition advocating for mandatory (rather than voluntary) extractive-revenue disclosure, secured a renewed UK government commitment to extractives transparency as of 29 June 2026, continuing its long-running campaign for legally binding payment-disclosure rules rather than reliance on voluntary reporting (Business & Human Rights Resource Centre, Publish What You Pay UK Welcomes Renewed UK Government Commitment to Extractives Transparency). PWYP's Australian chapter separately welcomed a domestic political commitment to mandatory disclosure in the mining and oil sectors, reflecting the coalition's core strategic position that transparency should be a statutory requirement rather than an optional corporate-responsibility practice (Publish What You Pay, A Transparent Mining and Oil Industry Is One Step Closer).
Amnesty International's 19 January 2016 report, co-researched with African Resources Watch (Afrewatch), “This Is What We Die For,” was the first comprehensive account tracing how cobalt mined by children as young as seven in the DRC entered the supply chains of major electronics and automotive brands, based on interviews with 87 current and former cobalt miners — 17 of them children — across five mine sites, alongside 18 cobalt traders (Amnesty International USA, This Is What We Die For). UNICEF's 2014 estimate, cited in the report, put the number of children working across all southern DRC mines at approximately 40,000 (Amnesty International, “This Is What We Die For”). A 2017 follow-up report assessed and criticized the human-rights due-diligence policies of 29 global companies named in connection with DRC cobalt supply chains (Amnesty International, Corporate Action and Inaction to Tackle Abuses in the Cobalt Supply Chain). By September 2023, Amnesty's focus shifted from artisanal to industrial-scale mining, documenting forced evictions and human-rights abuses at four industrial cobalt and copper mining sites around Kolwezi based on interviews with more than 130 people across six mining projects, finding sexual assault, arson, and beatings connected to community displacement for mine expansion (Amnesty International, Forced Evictions at Industrial Cobalt and Copper Mines in the DRC). Independent academic research cited in Amnesty's 2020 statement — a joint study by the universities of Lubumbashi, Leuven, and Ghent — found evidence that toxic pollution exposure is causing birth defects in children of cobalt and copper miners in the DRC's Katanga region (Amnesty International, DRC: Alarming Research Shows Long-Lasting Harm from Cobalt Mine Abuses).