France Deploys Sniffer Drone for Sulfur Testing at Calais 28 September 2020 The drone's operation started on September 23 and will last for three months.Author: Capt. Johnhttp://feedproxy.google.com/~r/shipandbunker/~3/b2A8rsHQtbk/395347-france-deploys-sniffer-drone-for-sulfur-testing-at-calais