A gold prospector from Yukon is using unmanned aerial drones and other technologies to survey huge stretches of land for mineral deposits, and leaving less of an environmental footprint in the process.
Shawn Ryan says the technology is greatly reducing the cost of doing business in the initial stages of mineral exploration.
The drones he uses look a bit like a medium-sized kite, and carry a relatively simple 16-megapixel camera on board. It flies over a target area, snapping photos of the ground.
He and his team also do geophysical surveys of the area — they string out a 420-metre cable over an area that soil sampling has already indicated may have potential. The cable has electrodes spaced out every five metres that send electrical currents about 90 metres down into the ground and can show faults or cracks that may contain gold.