Mining Due Diligence: A Practical Guide for Buyers, Investors and Lenders

What mining due diligence is

Mining due diligence is the independent verification of the legal, technical, counterparty, operational and compliance facts underpinning a mineral transaction. It is carried out before capital is committed and referenced to original-source evidence rather than to representations made by the seller. Well-run due diligence does not aim to close a deal or reject it — it aims to give the buyer, investor or lender a defensible basis on which to decide.

It is distinct from valuation, from geological modelling and from technical audit. Each of those has its place; none of them, on their own, verifies that the party sitting across the table has lawful control of the asset they are selling, or that the numbers in the data room match the ones held by the regulator.

Why it matters

Mineral transactions in Southern Africa are executed across multiple regulators, currencies, corporate structures and languages. Documentation quality varies widely between jurisdictions, and the counterparty landscape is populated with intermediaries whose mandates are not always transparent. Losses in this environment are rarely caused by geology — they are caused by title that will not survive scrutiny, by ownership that cannot be traced, by assays that cannot be reconciled, and by payment structures that release capital before facts are verified.

Rigorous due diligence is what separates a transaction that can be defended to a board, a compliance desk or a lender from one that cannot.

The risks it addresses

The five-step methodology

Every Samitac engagement follows the same disciplined sequence — adapted to jurisdiction, commodity and materiality, but never abbreviated. Each step produces documented outputs that feed the next.

1. 1
   01

   Intake & Scope

   Every engagement begins with a confidential briefing that defines transaction context, materiality thresholds, jurisdictions in play, and the specific questions the report must answer. Scope boundaries — what is and is not covered — are captured in a signed engagement letter so findings can never be read outside the mandate they were produced under.

   Outputs

   • Signed engagement letter
   • Scope memorandum
   • Information request list
2. 2
   02

   Documentary Verification

   Licence, cadastral, corporate, tax and compliance records are checked directly against the original-source authorities in each jurisdiction. A licence certificate presented in a data room is not the same as a live registry record; we work from the registry, not the counterparty's copy.

   Outputs

   • Cadastral extract
   • Corporate registry filings
   • Tax and compliance standing
   • Sanctions and adverse-media screen
3. 3
   03

   Independent Field & Technical Checks

   Qualified personnel attend site to confirm existence, operational tempo and stockpile realism. Where relevant, sampling is coordinated under documented chain-of-custody controls and sent to accredited laboratories. Geological reports, resource statements and assay files are reviewed for internal consistency and source authenticity.

   Outputs

   • Site attendance report
   • Chain-of-custody records
   • Independent assay results
   • Technical file review
4. 4
   04

   Risk Assessment

   Findings are structured across six categories — licence, ownership, technical, counterparty, compliance and transaction-execution risk — with each item rated and traced back to the evidence supporting it. Nothing enters the risk register that cannot be sourced.

   Outputs

   • Categorised risk register
   • Materiality mapping
   • Residual-risk commentary
5. 5
   05

   Final Assurance Report

   A confidential, evidence-referenced report is delivered to the client with clear findings, residual-risk commentary and recommended transaction safeguards — payment structuring, escrow triggers, delivery milestones and monitoring points that tie capital release to verified events rather than to representations.

   Outputs

   • Assurance report
   • Executive summary
   • Recommended transaction safeguards

A fuller description of the process — including how scope, independence and evidence traceability are governed — is set out on our verification methodology page.

What counts as evidence

Evidence, for these purposes, is anything that can be independently reproduced from a source outside the counterparty. A cadastral extract obtained directly from the mining registry is evidence; a scanned licence certificate emailed by the seller is not. An assay result from an accredited laboratory, tied to a sample whose custody is documented from pit to bench, is evidence; an assay certificate with no chain of custody is not. Our reports carry only findings that pass this test — and each finding is anchored to the specific document, extract or observation that supports it.

This discipline is what allows a Samitac report to be relied on downstream by lenders, insurers and compliance desks that were not in the room when the diligence was performed.

Red flags to escalate

No single red flag is proof of misconduct. Any of the following, however, should trigger deeper verification before the transaction proceeds:

• Licence documents supplied by the counterparty but not reconcilable to the live cadastral registry.
• Corporate ownership presented through nominee structures or jurisdictions that obscure beneficial control.
• Assay certificates without a traceable chain of custody or from unaccredited laboratories.
• Site visits arranged only at times of high visible activity, with restricted access to production areas.
• Payment terms requiring large uncontingent transfers before independently verifiable events.
• Broker chains where mandates, commissions and end-buyer identities cannot be documented.
• Export or tax documents that reference regulators or reference numbers that cannot be independently confirmed.

Buyer checklist

A working baseline for buyers, investors and lenders evaluating a Southern African mineral transaction. Each item corresponds to a verification our team performs directly on live mandates.

• Confirm the licence directly against the cadastral registry — not from documents in the data room.
• Trace beneficial ownership through corporate filings to a natural person or disclosed entity.
• Verify assay results against accredited-laboratory records and the sample chain of custody.
• Attend site with qualified personnel and assess operational tempo, not just presence.
• Map every intermediary in the chain, with a documented mandate for each.
• Confirm environmental, tax and export standing against the applicable regulator.
• Structure payment against verified events, using escrow and documentary triggers.
• Agree post-transaction monitoring points before signing, not after settlement.

Frequently asked

Further answers are available in our FAQ.