Using a satellite to estimate the amount of rock mined at Penasquito
Photosat is a leader in producing non-intrusive, highly accurate satellite topographic maps are recognized as an alternative to the increased risk and associated expense when using personnel on the ground for surveying in hazardous areas.
At the beginning of 2010 PhotoSat calculated volume estimates for changes to the pit of the Penasquito Gold Mine over a period of approximately 1 month.
Stereo WorldView-2 satellite photos were taken of the Penasquito pit on January 31 and again on February 27, 2010. Using its proprietary geophysical stereo satellite elevation processing system, PhotoSat produced elevation values covering the Penasquito mine site for these two dates.
The volume changes in the pit, the waste dumps, the leach pad and the ore stockpiles were then calculated from the differences between the February 27 and January 31 elevation surfaces.