G-P06 · TOPIC · responsible-sourcingGCRI dossier · service level R0
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Topic dossier · Trade and Strategic Resources

Responsible sourcing

Supply chains for minerals, agriculture, textiles and electronics can involve forced and child labour, conflict financing, deforestation and pollution. Due diligence standards and laws increasingly require firms to identify and address these risks, and producers to show what they are doing. This page sets out how adverse impacts arise in supply chains, how due diligence and traceability work, and what evidence serves the firms, regulators and producers involved.

Systems · around this subjectDesign, not a record

Supplier tier map

Responsible sourcing · Assembly cluster · Bill of materials BOM-110

Single source at tier 3GCRI · Trade and Strategic Resources

Tier mapping

  1. Tier 129 suppliers
  2. Tier 250
  3. Tier 3140
  4. Raw materials10

Concentration

Rare earth magnet886498None qualifiedHigh
Gallium825080Recycling pilotHigh
Copper wire251224Two qualifiedLow
Lithium cells692429One qualifiedMedium

Mitigation

Dual source
qualification 9 months
Buffer stock
8 weeks
Design change
substitution study
Owner
Procurement lead
Supplier tier map: the screen's structure, terms and states for Responsible sourcing.Placeholder names and illustrative values; a design, not a record or a live system.

Fig.Supplier tier map. Design wireframe with placeholder names and illustrative values, not a record or a live system.

01In brief

The short answer.

Responsible sourcing is the practice of buying materials and goods in ways that avoid contributing to human rights abuses, conflict and environmental harm. It rests on due diligence under OECD and UN guidance, on traceability through complex supply chains, and increasingly on laws that make these duties binding.

02Geography

Activity and hazards in the Strait of Malacca.

For responsible sourcing, in GCRI's spatial-intelligence reading, the map opens on night lights, population density, true-colour imagery and land cover with true colour from NASA GIBS, framed on the Strait of Malacca; every other NASA layer, live feed and forecast waits in the layer list.

The interactive map needs JavaScript; the layer list and sources are below.

Layers 4

Activity and hazards, for this page

Latest available

NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth

Loading the latest NASA imagery.

Drag to move. Ctrl or ⌘ and scroll, pinch or the buttons to zoom; hover for the values under the pointer; reset returns to the region.

For responsible sourcing, in GCRI's spatial-intelligence reading, the map opens on night lights, population density, true-colour imagery and land cover with true colour from NASA GIBS, framed on the Strait of Malacca; every other NASA layer, live feed and forecast waits in the layer list.Satellite and model products as NASA publishes them, each with its own date; indicators, not assessments of any place; claim ceiling INTEGRATED.

Data: NASA GIBS · ASTER GDEM · Blue Marble · © OpenStreetMap contributors · Natural Earth · GDACS · Copernicus Sentinel-2 L2A · NASA HLS S30Sources and licences

  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • VIIRS Black Marble night-time lights, NASA Goddard Space Flight Center; distributed by the NASA Level-1 and Atmosphere Archive and Distribution System (LAADS DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Center for International Earth Science Information Network (CIESIN), Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Licensed under CC BY 4.0. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). CC BY 4.0
  • VIIRS near-real-time products (flood, land surface temperature, snow cover, corrected reflectance), NASA LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • MODIS land products (vegetation indices, gross primary production, land cover), NASA LP DAAC and LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • ASTER GDEM is a product of METI and NASA (ASTER Global Digital Elevation Model V003, NASA LP DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Public domain
  • © OpenStreetMap contributors (ODbL), via NASA GIBS (coastlines, boundaries, roads and place names). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). ODbL
  • Blue Marble, NASA Earth Observatory; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Context on the globe and flat map: coastlines, boundaries, roads and place names from NASA GIBS reference layers (OpenStreetMap data, ODbL, © OpenStreetMap contributors); Blue Marble imagery as an optional base; 3D terrain and the elevation read-out from the ASTER GDEM elevation colour index (5 m to 200 m classes, exaggerated for legibility). Boundaries are drawn as published and imply no position on any territory.
  • Globe: MapLibre GL JS 6.9.1, BSD-3-Clause, © MapLibre contributors.
  • Live: GDACS (EC JRC / UN OCHA) Events are indicative, not official warnings.
  • Observed (EO): Copernicus Sentinel-2 L2A (contains modified Copernicus Sentinel data 2026), Microsoft Planetary Computer
  • Observed (EO): NASA HLS S30 (contains modified Copernicus Sentinel data 2026). We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS).
  • Optional layers (35 sources in the layer list: live, forecast, observed and context) print their provider credit on the map and here when switched on; forecasts are model output and derived indices are estimates.

Layers and dates

  • Night-time lights, daily: VIIRS Black Marble (VNP46A2), NASA LAADS DAAC · 12 Oct 2026
  • Population density, 2020: Population: CIESIN, Columbia University, Gridded Population of the World v4.11 (2018), NASA SEDAC, CC BY 4.0 · static
  • True colour: VIIRS NOAA-20 corrected reflectance, NASA LANCE · 13 Oct 2026
  • Land cover type (IGBP), yearly: MODIS Terra and Aqua land cover (MCD12Q1), NASA LP DAAC · 2024
  • Enhanced vegetation index, rolling 8 days: MODIS Terra EVI, NASA LANCE · 13 Oct 2026
  • Flood water, 3-day composite: VIIRS Global Flood Product, NASA LANCE · 14 Oct 2026

03The question

Responsible sourcing: how the risk develops.

Environmental, labour and traceability limits. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.

Mechanism

Risk concentrates where oversight is weak

Labour abuses, conflict financing and environmental harm are more likely where governance is weak, informal production is common and supply chains are opaque.

Mechanism

Due diligence is a process

International standards ask firms to identify, prevent, mitigate and account for adverse impacts, prioritising the most severe. Audits alone do not meet that standard.

Mechanism

Traceability is hard to keep

Materials are mixed, processed and traded through many hands. Chain-of-custody systems and documentation can be falsified or broken.

Mechanism

Law is turning guidance into duty

Laws on forced labour imports, conflict minerals, deforestation and corporate due diligence make standards binding in some markets, changing what suppliers must show.

04Key terms

Terms used on this page.

Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.

TermDefinition
Conflict mineralsMinerals whose trade may finance armed conflict, commonly tin, tantalum, tungsten and gold.
Chain of custodyThe documented sequence of ownership and handling of a material through a supply chain.
Adverse impactHarm to people or the environment that a firm causes, contributes to or is linked with.
05Indicators

What is measured, and how well.

Each indicator carries its unit, its cadence, the kind of source behind it and the evidence label a value would carry. No values are shown: a programme supplies them under its own authority.

IndicatorUnitCadenceSource typeLabel
Firms reporting supply chain due diligencepercent of in-scope firmsannualCorporate disclosuresDECLARED
Smelters and refiners assessed against a responsible sourcing standardcountper updateIndustry assessment programme listsREPORTED
Goods with documented forced or child labour riskcount of goods and countriesper editionGovernment listsOFFICIAL
Deforestation linked to commodity productionhectaresannualSatellite forest loss with commodity attributionESTIMATED
Grievances received and resolvedcountannualCompany grievance mechanismsDECLARED
Countries implementing the EITI StandardcountannualEITI recordsOFFICIAL
06Canvas

From sources to decisions.

The topic as a computational graph: named sources feed the methods, an evidence review gates the outputs, and the decisions stay with the authorities that hold them.

Pipeline canvas · Responsible sourcing as a run graphDesign, not a record
Responsible sourcing: how an economic shock propagatesA shock to prices or demand propagates through input-output linkages to sector output, then to jobs and household income, and to public finances; policy responses are tested against the same chain. Design of the process, not a record of a run.

Fig. 02Nodes carry their type, two metric rows and a state; connectors show what feeds what; dashed frames name the owners; the timeline is the cadence. Design of the pipeline, not a record of a run.

07Sources

Where the evidence comes from.

Named public datasets and institutional records, each with its licence class. Sources by agreement are used only under their terms and never republished.

SourceWhat it givesLicence class
OECD Due Diligence Guidance and alignment assessmentsStandards and assessments of industry programmesPublic, OECD terms
US Department of Labor List of Goods Produced by Child Labor or Forced LaborGoods and countries with documented riskPublic domain, US government
Responsible Minerals Initiative smelter and refiner listsFacilities assessed under the responsible minerals assurance processPublic lists, RMI terms
Global Forest Watch and Hansen Global Forest ChangeTree cover loss and commodity-driven deforestationOpen, CC BY 4.0
Business and Human Rights Resource CentreAllegations, company responses and legal casesPublic, terms to check
EITI data portalExtractive sector disclosuresOpen, EITI terms
08Decisions

Who decides, and what the evidence serves.

Trade and Strategic Resources prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.

Who decidesThe questionEvidence this page serves
Firms and procurement leadsWhere to focus due diligence and how to respond to risks foundRisk maps; disclosure reviews
Regulators and customs authoritiesHow to enforce due diligence and import rulesLists of goods at risk; traceability evidence
Producer governments and associationsHow to demonstrate and improve practicesEITI and assessment evidence

Outputs this topic produces

  • Supply chain risk maps by commodity and origin
  • Reviews of due diligence disclosures against OECD steps
  • Deforestation-linked sourcing analyses from satellite data
  • Evidence notes on new due diligence laws
09Core questions

What experts ask about responsible sourcing.

  • What environmental and social impacts occur at each stage of a supply chain?
  • How reliably can a material be traced from source to product?
  • What do audits, certifications and disclosures actually measure, and what do they miss?
  • How do sourcing standards affect livelihoods, including those of informal and small-scale producers?
  • How do traceability requirements interact with supply security?
10Mechanisms and drivers

Why traceability is hard.

Materials are often mixed, refined and transformed as they move through supply chains. Once ore from many mines is smelted together, or cotton from many farms is spun, the physical link to the source is lost. Traceability then depends on documentation, which can be incomplete or falsified.

Impacts concentrate at the start of the chain: water use and pollution at mines, deforestation for agricultural commodities, and labour conditions in artisanal mining and farming. Those who make purchasing decisions are often far removed from these conditions.

Interventions can have unintended effects. Blanket withdrawal from a region can harm the livelihoods it intended to protect, and shift production to less visible channels.

11Methods and data

Methods and their limits.

  1. 01

    Chain-of-custody systems

    Documentation and segregation models that track materials. They depend on the integrity of every link.

  2. 02

    Material fingerprinting

    Chemical and isotopic analysis to infer origin, using materials science and chemistry. Methods are maturing and not available for all materials.

  3. 03

    Remote sensing and GIS

    Satellite monitoring of land use and mining activity using geospatial information systems. It shows change but not conditions on the ground.

  4. 04

    Life-cycle assessment

    Estimating environmental impacts across a product's life. Results are sensitive to boundaries and data.

No method makes a supply chain fully transparent. Analyses state what was traced, how, and what remained uncertain.

12Methods

How it is studied, and what the methods cannot say.

  1. Geospatial information systemsFacility hazard overlays · Sourcing region deforestation · Corridor mappingApplied here
  2. Network science and contagionTrade network centrality · Multi-tier dependency mapping · Disruption propagationApplied here
  3. EconometricsPrice transmission · Effects of trade measures · Disruption impacts on outputApplied here
  4. Materials science and chemistryProcessing route analysis · Recycling potential · Substitution optionsApplied here
13Questions

Questions and answers.

What is supply chain due diligence?
An ongoing process through which firms identify, prevent, mitigate and account for actual and potential adverse impacts in their operations and supply chains, as set out in OECD and UN guidance.
What are conflict minerals?
Minerals whose extraction or trade may finance armed conflict or involve serious abuses, typically tin, tantalum, tungsten and gold, under OECD guidance and some laws.
Is an audit the same as due diligence?
No. Audits are one tool. Due diligence requires a risk-based process of identifying, addressing and reporting on impacts, including remedy where harm occurs.
Does the platform certify responsible supply chains?
No. GCRI does not certify. The topic studies what traceability methods can show and where they fall short.
Are labour conditions covered?
Yes, as part of the evidence on conditions at source, alongside environmental impacts.
Can a company submit its supply chain for review?
No individual review is offered. The platform's research uses public and consented data under clear terms.
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