Mine Recovery Factor Calculator

Compare actual matched mining-stage inlet/outlet dry ore inventories, stage boundaries explicit. Signed reductions/increases retained. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.

Description

A mine-stage dry-ore reconciliation compares independently matched baseline and after-stage inventories.

A mine-stage dry-ore reconciliation compares independently matched baseline and after-stage inventories.1

A ratio and signed change preserve both reductions and increases.

When to use Mine Recovery Factor Calculator

Use this tool to calculate or review the supplied observations under the stated rules. Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.

How to use Mine Recovery Factor Calculator and understand its results

  1. Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
  2. Enter observedMineStageRecoveryBaseline, observedMineStageRecoveryAfter, using the field meanings and rules below, then run the tool.
  3. Read observedMineStageRecoveryRatios, signedMineStageRecoveryChanges. Inspect nested result fields where present, and review unknown records separately from known matches.
  4. Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
Input fieldMeaningValue typeRequirement
observedMineStageRecoveryBaselineObserved mine stage recovery baselinelist of numberRequired
observedMineStageRecoveryAfterObserved mine stage recovery afterlist of numberRequired

Use aligned baseline values>0 and after values≥0 on a matched basis. Return after/baseline and after−baseline per record, without clipping ratios at one. The tool does not derive contained metal from assays or determine stage boundaries.

ratio_i=after_i/baseline_i; change_i=after_i−baseline_i

Use the matching field units and the exact boundary, ordering and reference rules above.

Output fieldMeaningValue type
observedMineStageRecoveryRatiosObserved mine stage recovery ratioslist of number
signedMineStageRecoveryChangesSigned mine stage recovery changes; preserve the subtraction order and sign defined in the mechanicslist of number
json
{
  "input": {
    "observedMineStageRecoveryBaseline": [
      2,
      4
    ],
    "observedMineStageRecoveryAfter": [
      3,
      2
    ]
  },
  "output": {
    "observedMineStageRecoveryRatios": [
      1.5,
      0.5
    ],
    "signedMineStageRecoveryChanges": [
      1,
      -2
    ]
  }
}

Limitations and assumptions

Units, ledger boundaries, survey interpretation and model applicability must be independently established. These summaries do not assign reserve/resource classifications or establish support adequacy, ventilation safety or an operating setting.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above.

Alternative or Complementary methods

For a related step, use Mine Call Recovery Calculator: A mine-call dry-ore reconciliation compares independently matched baseline and after-stage inventories. For a complementary comparison, use Ore Loss Percentage Calculator: An ore-loss fraction needs matched called and unrecovered inventory on a common basis.

References

  1. Mine Recovery Factor Calculator — tool.io

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