Two power masts in "Limfjorden" in the northern part of Denmark was removed with explosives in august 2015. Each mast had approx. 5 kg of explosives at the feet for a clean cut and to make sure the masts landed safely on shore. Bridge was up and ships was kept away at a safe distance during the explosion. At the bottom of the mast - 8 m from the explosives - we mounted a GoPro Hero 4 Black which luckily survived the blast with no scratches.