The helghast harvester drone is a small flying worker robot that operates in Pyrrhus City transporting and collecting raw petrusite ore from the smoker tower of Konstantine City a offshore archipelago of Pyrrhus City. These automated robots work in vast numbers searching and collecting ores that they carry to a nearby petrusite extraction bay also know as the refinery, they move the ore with the help of big electrostatic plates acting as containers for the ore to be transported in.