Comments on: In China, flame-throwing drones are often used to clear debris off power lines

Comments on: In China, flame-throwing drones are often used to clear debris off power lines https://lifeboat.com/blog/2018/08/in-china-flame-throwing-drones-are-often-used-to-clear-debris-off-power-lines Safeguarding Humanity Thu, 02 Aug 2018 23:02:51 +0000 hourly 1 https://wordpress.org/?v=6.6.1