FOR MINE SURVEYORS
You fly the site, build the surface, and by the end of the week someone in finance or production is asking why this month's figure does not match theirs. The hard part of mine surveying is rarely the measurement — it is being able to show, months later, exactly how a number was produced and why it is right.
Every period starts the same way: new flight, new surface, same set of questions. Stockpile inventory, pit advance, dump growth, the quantity someone is going to invoice against.
Because the terrain, the measurements and the reports live in the same project, next month is a reload rather than a rebuild. The reference surfaces, the pile boundaries and the density values you agreed on are still there.
Part of every discrepancy is real movement and part is survey noise. Change detection reports deposition and erosion separately, each with a volume and its uncertainty, so you can say what is measurable movement and what is inside the level of detection.
The other half of the argument is usually swell: rock in the ground occupies less space than rock in a truck. A survey volume is in-situ; a haulage count is loose. Stating which one a figure is prevents most of the reconciliation dispute before it starts.
Volume is computed above a reference base with an explicit choice of how the pile toe is defined, and converted to tonnage with a density you enter rather than one buried in a setting.
The PDF report carries the reference mode, the measured extent and the density alongside the number — so when someone questions it in six months, the answer is in the document rather than in your memory.
Processing is local, so a network that drops out at the pit office is not a work stoppage. There is no upload queue between finishing a flight and having a number.
Gigabyte-scale surveys open and pan at full resolution instead of being decimated to something the software can cope with.
Sections, contours, boundaries and measured geometry go out as DXF; tables as CSV or Excel; surfaces as GeoTIFF; the site as KMZ; and reports as print-ready PDF.
Nobody downstream needs a licence to open what you send them.
Each of these has its own page with the detail and the supported formats.
Volume above a reference base, density-based tonnage and a PDF report.
Learn moreDeposition and erosion between two surveys, with volume and uncertainty.
Learn moreEarthwork volumes against a reference surface or level.
Learn moreStation-based cubature with DXF section drawings.
Learn moreWhat to do with the flight once photogrammetry is finished.
Learn moreLAS/LAZ rasterized to a surface you can measure on.
Learn moreReading, assigning and transforming the CRS of every layer.
Learn moreDXF, CSV, GeoTIFF and KMZ outputs for whoever asked.
Learn moreBecause they measure different states of the same material. A survey volume is in-situ — rock as it sits in the ground. A haulage count is loose volume after excavation, which is typically 30–60% larger. Neither is wrong; they have to be converted before they can be compared.
Compare it against the level of detection for that pair of surveys. Differences smaller than the combined survey uncertainty are not evidence of movement, which is why STREAM reports volume together with its uncertainty rather than as a bare number.
Yes. Measurements, boundaries and reference surfaces are objects in the project, so the next period's survey is loaded against the same definitions instead of being set up again.
Yes. STREAM consumes standard outputs — GeoTIFF elevation models and orthophotos, LAS/LAZ point clouds — regardless of which pipeline produced them.
DXF for CAD, CSV or Excel for tables, GeoTIFF for surfaces, KMZ for Google Earth and PDF for reports. No licence is needed to open any of them.
Free beta for Windows x64. Works fully offline with GeoTIFF, LAS/LAZ and DXF.
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