A mine receives 40,000 litres of diesel, the bowser records 31,000 litres dispensed, and the tank gauge shows 7,400 litres left. That leaves 1,600 litres unexplained—but not necessarily stolen. Temperature, delivery timing, meter calibration, transfers and incomplete fuel logs can all change the result. Effective fuel reconciliation mining teams use a repeatable process to locate the difference before deciding what caused it. This guide shows the calculations, investigation steps and records to keep.
Every litre has a journey. Can your mine account for it?
Connect bulk deliveries, tank stock, dispenser readings and machine fuel logs to find the gap between fuel purchased and fuel actually used—without treating every variance as theft.
Example figures only. The calculation assumes opening stock plus deliveries totals 40,000 L and no other recorded transfers.
Reconcile the tank before you blame the truck
Start with physical inventory movement, then match dispensing transactions to individual assets.
A reliable mine site fuel reconciliation starts with the tank balance—not an equipment MPG report. Record stock at a consistent cut-off, add accepted deliveries, subtract documented issues and transfers, then compare expected closing stock with measured closing stock. Differences should be reviewed against measurement tolerances and site policy.
Keep both the raw readings and the corrected figures so the audit trail remains understandable. Once the stock balance is credible, book an HVI demo to see how equipment fuel logs and cost records can support the investigation.
Follow fuel through four checkpoints
Each handoff needs an independent record, not just a total on a spreadsheet.
Delivery received
Supplier ticket, volume basis, delivery time, tank ID and receiving confirmation.
Proof: delivery receiptTank measured
Opening/closing gauge, tank chart or calibrated probe, water checks and cut-off time.
Proof: stock readingFuel dispensed
Dispenser/bowser meter, transaction ID, litres, operator and timestamp.
Proof: issue transactionEquipment assigned
Asset ID, engine hours/odometer, litres received and job or shift context.
Proof: equipment fuel logMissing asset IDs and handwritten end-of-shift entries make a real discrepancy harder to trace. HVI's fuel logging and equipment records can help consolidate the asset-level side of this chain; bulk tank instrumentation and calibrated dispenser data may still come from separate site systems.
One discrepancy. Four very different explanations.
Investigate in an order that separates paperwork, measurement and actual physical loss.
Delivery tickets, midnight readings, delayed uploads, shift handover notes.
Re-run for a matched periodMeter tests, tank calibration, temperature reference, gauge and water readings.
Validate measurement basisBowser sheets, transfers, fuel cards, equipment IDs and duplicate entries.
Resolve missing or double logsTank and hose inspections, access records, seal checks and repeated patterns.
Escalate under site procedureSpot the machine that deserves a closer look
Normalize litres by operating hours before comparing equipment working different duties.
HT-23 is a review candidate—not proof of misuse. Check payload, idling, haul distance, grade, maintenance condition and data quality.
Use like-for-like equipment and duty cycles. For trucks, also review litres per tonne moved or tonne-kilometre where reliable production data exists.
Use equipment fuel logs to flag outliers, then review maintenance history and operating context before drawing conclusions. Book a demo to review fuel consumption and cost reporting in HVI.
The mine fuel reconciliation checklist
Give each role a defined control point so discrepancies do not disappear between shifts.
Fuel attendant / bowser operator
- Confirm opening and closing meter readings.
- Record every issue with litres, time and asset ID.
- Capture manual issues and emergency transfers.
- Report leaks, damaged seals and meter faults.
Fuel controller / supervisor
- Match receipts, dispensing and closing stock.
- Resolve missing transactions and timing differences.
- Compare variance with site thresholds.
- Assign exceptions with an owner and due date.
Fleet / maintenance manager
- Review fuel per operating hour by equipment class.
- Investigate repeated asset-level anomalies.
- Check dispenser calibration and tank records.
- Close corrective actions with supporting evidence.
Keep the equipment side of fuel reconciliation auditable
Fuel-management software helps when each transaction has context, not just a number.
Fuel logs by asset—capture fuel quantity, date and equipment identity so issues are traceable.
Consumption review—compare usage with engine hours and investigate exceptions where data supports it.
Cost visibility—organize fuel spend alongside the machines consuming it.
Maintenance context—review inspections and service records when consumption changes unexpectedly.
HVI is positioned here as the equipment fuel-log and reporting layer, not a replacement for tank-level inventory systems, calibrated dispensing equipment, access control or mine production dispatch. For your site's actual integrations and workflow, book a fuel-management walkthrough.
Mining fuel reconciliation FAQs
Clear answers for fuel controllers, fleet managers and mine operations teams.
What is fuel reconciliation in mining?
It is the process of comparing opening fuel stock, receipts, issues, transfers and closing measured stock to identify unexplained differences. Mine operators also reconcile dispenser transactions to individual machines to understand where diesel was allocated.
How do you calculate a mine site fuel variance?
Expected closing stock equals opening stock plus receipts and transfers in, minus issues and transfers out. The difference between expected and measured closing stock is the inventory variance. A percentage can be calculated against a clearly stated base, such as total fuel available, and applied consistently.
Does an unexplained diesel variance mean fuel theft?
No. Cut-off errors, meter calibration, temperature effects, tank measurement uncertainty, missing transactions, leaks and unauthorized use are different possible explanations. Investigate systematically before attributing a cause.
What fuel records should a mine keep for reconciliation?
Delivery receipts, tank readings, dispenser and bowser meter totals, equipment fuel logs, asset IDs, operator and shift information, transfer records, calibration evidence and documented exception resolutions. Retention should follow applicable site and regulatory requirements.
How can HVI help with mining fuel loss control?
HVI fuel management can support equipment-level fuel logging, consumption review and cost reporting. Those records help identify unusual entries and investigate asset usage. Tank inventory measurement, calibrated meters and physical security controls remain separate essential parts of mine-wide reconciliation.
Turn fuel logs into better mine fleet decisions
Bring equipment fuel entries, usage patterns and costs into a more consistent workflow. See how HVI supports the fleet side of fuel reconciliation without losing sight of the tank and dispenser controls your site already uses.
