Extracted volumes, quarry faces and slopes: repeatable measurements on the terrain model, with nobody sent to the face.
In a quarry the number that matters is volume, and volume is the difference between two surfaces. A monthly aerial survey returns it over the whole area with nobody sent to the working face, where ground survey is slow and not always safe.
Figures for this sector
A digital terrain model at every survey: material removed or stockpiled is the difference between two surfaces, computed over the whole area rather than on sample sections.
Yard, plant and face in a single survey: the difference from last month's is the material moved.
The gimbal tilts up to 70° upwards: a wall is filmed from below without overflying it and without approaching an unstable toe.
A face of vertical walls: with the gimbal tilted upward the wall is filmed without flying over it.
Every pile with its volume and its date, useful for the month-end inventory and for site accounting.
Stockpiles and conveyors in the yard: every heap with its own volume and date.
Surveys repeated over the same perimeter reveal movement that looking at the slope does not: the difference between two models needs no interpretation.
Slopes and the forest edge: two models months apart reveal movement the eye does not catch.
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