Production Achievement %
Proportion of applicable plan/target-to-time achieved in the reporting period.
Formula: Actual Quantity ÷ Applicable Plan Quantity × 100%
Unit: %
Whether output is tracking the relevant plan basis.
Mining KPI Library
Production Variance
Absolute difference between actual and applicable plan quantity.
Formula: Actual Quantity − Plan Quantity
Unit: Reporting quantity unit (for example t or bcm)
Size and direction of deviation.
Cumulative Production Variance
Cumulative actual minus cumulative plan through the selected reporting date.
Formula: ΣActual − ΣPlan
Unit: Reporting quantity unit
Whether daily recoveries are actually closing the accumulated gap.
Mechanical Availability (MA)
Ratio of working time to working plus repair time under the W/R/S operating-time model.
Formula: W ÷ (W + R) × 100%
Unit: %
Maintenance-related availability signal.
Physical Availability (PA)
Proportion of total W/R/S time not in repair.
Formula: (W + S) ÷ (W + R + S) × 100%
Unit: %
Whether equipment is physically available rather than under repair.
Use of Availability (UA)
Proportion of available working-plus-standby time that is actually working.
Formula: W ÷ (W + S) × 100%
Unit: %
Conversion of available time into working time.
Effective Utilization (EU)
Working time as a share of total W/R/S time.
Formula: W ÷ (W + R + S) × 100%
Unit: %
Combined view of repair and standby impact on effective working time.
Fuel Consumption Rate
Fuel consumed per valid hour-meter interval.
Formula: Fuel Quantity ÷ ΔHM
Unit: L/HM (or site-approved equivalent)
Fuel performance relative to operating hours.
Gross Loading Time
Elapsed time between authoritative loading start and loading finish.
Formula: Loading Finish Timestamp − Loading Start Timestamp
Unit: Hours/minutes
Total elapsed loading window.
Recorded Lost Time
Sum of linked recorded interruption durations within the loading/operating window.
Formula: ΣRecorded Interruption Duration
Unit: Hours/minutes
Evidence-backed time not available for effective loading/operation.
Effective Loading Time
Gross loading time less recorded linked interruptions.
Formula: Gross Loading Time − Recorded Lost Time
Unit: Hours/minutes
Effective working/loading window supported by recorded evidence.
Average Loading Rate
Actual loaded quantity per effective loading time where both quantity and effective time are authoritative.
Formula: Actual Loaded Quantity ÷ Effective Loading Time
Unit: Quantity/hour
Physical loading throughput during effective working time.
Survey Reconciliation Variance
Difference between official Survey quantity/volume and provisional Operations quantity for the same compatible scope.
Formula: Official Survey Quantity − Provisional Operations Quantity
Unit: Compatible quantity unit
Magnitude and direction of operational-to-official reconciliation difference.
Quality Variance
Difference between final/actual quality result and planned/target quality on a compatible approved analytical and quantity basis.
Formula: Actual/Final Parameter − Planned/Target Parameter
Unit: Parameter-specific
Direction of quality deviation relevant to stock/shipment/value context.
Operational Cost Variance
Actual/calculated operational cost minus applicable planned/budgeted operational cost for a compatible scope.
Formula: Actual Operational Cost − Planned Operational Cost
Unit: Currency
Economic deviation associated with operational performance.
Unit Operational Cost
Operational cost divided by the explicitly stated relevant actual output unit.
Formula: Operational Cost ÷ Relevant Actual Output
Unit: Currency per t/bcm/hour/other approved denominator
Relationship between cost and delivered operational output.