Mining and Quarry Audit: Royalty, DMF, Stock and Lease Checks

A mining or quarry audit checks that quantities extracted, stockpiled and dispatched agree with the books, that royalty and statutory contributions are paid on the right quantity and value, and that lease conditions, environmental obligations and restoration costs are properly recognised. The business runs on volume, and volume is estimated rather than counted.

Last reviewed: 17 October 2026. Facts checked. We ran a web search on the Mines and Minerals (Development and Regulation) Act contributions. It returned GST advance-ruling filings, an academic article, a trade blog and a news report. We read the search summaries and did not open the Act, the rules or any court judgment. The results suggest that the Act provides for a District Mineral Foundation and a National Mineral Exploration Trust, with contributions linked to royalty, and that the percentages differ by when the lease was granted and by rules. Sources varied, so we give no percentages. A news report mentioned a recent Supreme Court ruling on royalty calculation, but its date was inconsistent and we did not rely on it. Confirm rates, state rules and court rulings from the official texts. Existing site posts were checked so that links point to pages that exist.

What is distinctive about mining

• Output is measured by survey, weighbridge or truck count, not by a purchase invoice.
• Stockpiles are large, uneven and often outdoors, so counting means measuring.
• Royalty and related contributions are set by statute and state rules and depend on grade, mineral and lease.
• The lease, the environmental clearance and the mining plan carry conditions that can stop operations if breached.
• Mining is capital heavy, with heavy machinery, contractors and fuel as the main cost lines.
• Closure and restoration costs arise years after the extraction that caused them.

Key risks

1. Quantity misstatement. Extraction or dispatch recorded at a different figure from what was removed.
2. Royalty and contribution errors. Payment on the wrong quantity, grade or rate, or late payment.
3. Stock valuation. Volumetric estimates and grade assumptions that drive closing stock.
4. Contractor dependence. Raising, crushing or transport by contractors whose measurements the company relies on.
5. Lease and clearance breaches. Mining beyond permitted area or quantity.
6. Provisions. Mine closure, restoration and land-related obligations left out or understated.
7. Cash and fuel. Diesel consumption not tied to machine hours.
8. Illegal extraction. Quantities outside the books attributed to the lease area.

Audit programme in steps

Step 1: Read the lease and the approvals

Obtain the mining lease or quarry permit, the approved mining plan, the environmental clearance and any state conditions. List the permitted area, mineral, annual quantity and expiry. Note any condition tied to a payment or a report.

Step 2: Reconcile production, stock and dispatch

Prepare a quantity roll-forward: opening stock, extraction, losses, dispatch and closing stock. Compare it to the mine's returns to the authority and to weighbridge logs. A dispatch figure higher than extraction plus opening stock is a red flag.

Step 3: Observe the stockpile measurement

Attend the periodic survey, review the surveyor's method and check the density and moisture assumptions. Use the same approach as the stock count procedures and bring in a specialist where the auditor cannot assess the method alone. Compare book stock with the survey and investigate differences.

Step 4: Test weighbridge and dispatch controls

Check that weighbridges are calibrated, that tickets are sequential and that a ticket exists for each invoice. Sample vehicle numbers and test for the same vehicle appearing more often than a trip cycle allows.

Step 5: Test royalty and statutory contributions

Recompute royalty on a sample of months from dispatch quantity, grade and the applicable rate in force. Check the foundation and exploration-trust contributions in the same way and confirm payment dates. Review challans against the ledger. Confirm current rates from the official sources, since they depend on the lease and the state.

Step 6: Test contractors

Obtain contract terms for raising, crushing, hauling and blasting. Test the quantity billed against company measurements, and test that rates match the contract. Check if penalties for shortfalls are applied.

Step 7: Review fuel and equipment

Reconcile diesel issued to machine hours and distance. Check maintenance records for the larger machines. Review capitalisation of overburden removal and development costs. See the fixed assets checklist.

Step 8: Review provisions and contingencies

Read the closure plan and any financial assurance given. Test whether a provision for restoration is made under the applicable standard, how it was estimated and discounted, and whether it has been updated. Review pending notices and penalty claims for contingent liabilities.

Step 9: Review compliance and going concern

Check the validity of the lease and clearances, and the impact of any suspension. Where the lease is close to expiry or under auction, assess whether the useful life of assets and the going-concern basis are affected. Our note on management plans and going concern helps.

Step 10: Review tax and payroll

Test GST on the sale of minerals and on contractor services, including reverse-charge cases, and confirm current treatment of statutory contributions in GST and income tax from official sources. Check TDS on contractor payments and labour compliance for contract workers.

Common findings

• Book stock differing from the survey with no reconciliation.
• Dispatch tickets missing for some invoices.
• Royalty paid on a quantity that differs from dispatch records.
• Fuel consumption unsupported by machine logs.
• Restoration provision absent or based on an old estimate.
• Contractor bills based on estimates not agreed to measurement.
• Lease conditions with no tracker or owner.

Which Indian rules to check

Name only. Verify current text and your state's rules:

• The Mines and Minerals (Development and Regulation) Act, 1957 and the Mineral Concession and related rules.
• District Mineral Foundation and National Mineral Exploration Trust rules.
• The Environment (Protection) Act, 1986 and environmental clearance conditions.
• State minor mineral concession rules for quarries.
• GST law and the Income-tax Act for sale, contractor and royalty treatment.
• Applicable accounting standards on provisions and property, plant and equipment.

FAQs

Can an auditor verify a stockpile alone?

Only with a competent surveyor or specialist, and with a clear view of the method used.

Why does the lease matter to the financial statements?

Its term and conditions affect asset lives, provisions and the going-concern assessment.

What is the quickest analytical test?

Compare extraction, dispatch and closing stock with the weighbridge log month by month.

Related Articles

• Stock count procedures
• Fixed assets internal audit checklist
• Environmental audit scope and checklist
• Construction contractor audit

Statutory facts on this page are checked against their sources, and the page says where it relied on secondary reporting. How we verify · Report an error