Ore Waste Ratio Calculator
Audit actual separate ore/waste weighing ledger against independent reported inverse stripping ratio, not bank-volume density forward stripping model. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
An ore-to-waste weighing ratio is the inverse direction of a waste-to-ore stripping ratio.
An ore-to-waste weighing ratio is the inverse direction of a waste-to-ore stripping ratio.1
Comparing a separate reported ratio preserves ledger disagreement.
When to use Ore Waste Ratio 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 Ore Waste Ratio Calculator and understand its results
- Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
- Enter observedOreWeighedTonnes, observedWasteWeighedTonnes, observedIndependentLedgerOreWasteRatio, using the field meanings and rules below, then run the tool.
- Read observedWeighedOreWasteRatio, signedLedgerRatioDiscrepancy. Inspect nested result fields where present, and review unknown records separately from known matches.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedOreWeighedTonnes | Observed ore weighed tonnes | list of number | Required |
| observedWasteWeighedTonnes | Observed waste weighed tonnes | list of number | Required |
| observedIndependentLedgerOreWasteRatio | Observed independent ledger ore waste ratio | number | Required |
Use nonnegative ore and waste lists and a nonnegative independent ratio. Lists need not have equal lengths. Require positive summed waste; calculate total ore/total waste and independent ratio minus calculated ratio.
ratio=Σore/Σwaste; discrepancy=ledgerRatio−ratio Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedWeighedOreWasteRatio | Observed weighed ore waste ratio | number |
| signedLedgerRatioDiscrepancy | Signed ledger ratio discrepancy; preserve the subtraction order and sign defined in the mechanics | number |
{
"input": {
"observedOreWeighedTonnes": [
10,
20
],
"observedWasteWeighedTonnes": [
5,
15
],
"observedIndependentLedgerOreWasteRatio": 2
},
"output": {
"observedWeighedOreWasteRatio": 1.5,
"signedLedgerRatioDiscrepancy": 0.5
}
}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 Marginal Stripping Ratio Calculator: A marginal-stage stripping comparison needs matching current and previous waste and ore inventories. For a complementary comparison, use Waste Tonnage Calculator: Bank volume and matched dry bulk density give a dry-mass inventory for classified waste.
References
-
Ore Waste Ratio Calculator — tool.io
Similar or alternative tools
- Marginal Stripping Ratio Calculator
A marginal-stage stripping comparison needs matching current and previous waste and ore inventories.
- Waste Tonnage Calculator
Bank volume and matched dry bulk density give a dry-mass inventory for classified waste.