Stope Tonnage Calculator
Reconcile actual moisture-corrected stope extraction weights versus independent delivered dry ledger, not volume×density predicted ore tonnage. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
Wet extraction weights require matched dry fractions before comparing dry-material ledgers.
Wet extraction weights require matched dry fractions before comparing dry-material ledgers.1
This audit retains the delivered-minus-extracted discrepancy.
When to use Stope Tonnage 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 Stope Tonnage Calculator and understand its results
- Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
- Enter observedStopeWetTonnages, observedStopeDryFractions, observedIndependentDeliveredDryTonnes, using the field meanings and rules below, then run the tool.
- Read observedStopeDryTonnes, signedDeliveredMinusStopeDryTonnes. 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 |
|---|---|---|---|
| observedStopeWetTonnages | Observed stope wet tonnages | list of number | Required |
| observedStopeDryFractions | Observed stope dry fractions | list of number | Required |
| observedIndependentDeliveredDryTonnes | Observed independent delivered dry tonnes | number | Required |
Use aligned nonnegative wet tonnages and dry fractions [0,1], plus a nonnegative independent delivered dry total. Sum wet×dryFraction and subtract it from delivered dry tonnes.
dry=Σwet_i fraction_i; discrepancy=deliveredDry−dry Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedStopeDryTonnes | Observed stope dry tonnes | number |
| signedDeliveredMinusStopeDryTonnes | Signed delivered minus stope dry tonnes; preserve the subtraction order and sign defined in the mechanics | number |
{
"input": {
"observedStopeWetTonnages": [
10,
20
],
"observedStopeDryFractions": [
0.8,
0.9
],
"observedIndependentDeliveredDryTonnes": 25
},
"output": {
"observedStopeDryTonnes": 26,
"signedDeliveredMinusStopeDryTonnes": -1
}
}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 Waste Tonnage Calculator: Bank volume and matched dry bulk density give a dry-mass inventory for classified waste. For a complementary comparison, use Mining Dilution Percentage Calculator: Mining dilution on a dry-mass basis separates recovered ore and diluent after moisture corrections.
References
-
Stope Tonnage Calculator — tool.io
Similar or alternative tools
- Waste Tonnage Calculator
Bank volume and matched dry bulk density give a dry-mass inventory for classified waste.
- Mining Dilution Percentage Calculator
Mining dilution on a dry-mass basis separates recovered ore and diluent after moisture corrections.