Trondheim 02.05.2014 : Pascal-Alexandre Kane på SINTEF Materialer og nanoteknologi med drill-bit for boring av dype energibrønner. Foto Thor Nielsen

SINTEF’s project manager Alexandre Kane checks out a drill-bit that the Swedish company Sandvik has developed for mining operations. In future commercial drilling for deep geothermal energy, wells may need to be as much as a metre in diameter. Photo: SINTEF/Thor Nielsen