Ore Loss Skin Thickness Calculator
Infer equivalent unrecovered ore skin from independently surveyed loss volume/face area, not diluent skin inferred from ore/diluent density and mixed grade. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
An equivalent ore-loss skin thickness divides surveyed unrecovered volume by independently exposed ore-face area.
An equivalent ore-loss skin thickness divides surveyed unrecovered volume by independently exposed ore-face area.1
The result summarizes a volume and area without reconstructing a layer geometry.
When to use Ore Loss Skin Thickness 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 Loss Skin Thickness Calculator and understand its results
- Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
- Enter observedUnrecoveredSkinVolumesM3, observedIndependentlyExposedOreFaceAreasM2, using the field meanings and rules below, then run the tool.
- Read observedEquivalentOreLossSkinThicknessM. 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 |
|---|---|---|---|
| observedUnrecoveredSkinVolumesM3 | Observed unrecovered skin volumes m3 | list of number | Required |
| observedIndependentlyExposedOreFaceAreasM2 | Observed independently exposed ore face areas m2 | list of number | Required |
Use aligned unrecovered volumes≥0 and exposed face areas>0. Divide volume by area per observation in metres.
thickness_i=lossVolume_i/faceArea_i Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedEquivalentOreLossSkinThicknessM | Observed equivalent ore loss skin thickness m | list of number |
{
"input": {
"observedUnrecoveredSkinVolumesM3": [
2,
4
],
"observedIndependentlyExposedOreFaceAreasM2": [
10,
20
]
},
"output": {
"observedEquivalentOreLossSkinThicknessM": [
0.2,
0.2
]
}
}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 Ore Loss Percentage Calculator: An ore-loss fraction needs matched called and unrecovered inventory on a common basis. For a complementary comparison, use Ore Body Thickness Calculator: A drill intercept is longer than the layer-normal thickness when the borehole crosses obliquely.
References
-
Ore Loss Skin Thickness Calculator — tool.io
Similar or alternative tools
- Ore Loss Percentage Calculator
An ore-loss fraction needs matched called and unrecovered inventory on a common basis.
- Ore Body Thickness Calculator
A drill intercept is longer than the layer-normal thickness when the borehole crosses obliquely.