The application of a flame either to remove unwanted material or flame cut the workpiece into more manageable sizes. Other “burning” processes exist – such as illegal burning of copper wiring to remove the plastic coating or to change its mechanical temper prior to selling as scrap. Often there may be sizeable waste items during steel or other metals production and the large waste items e.g. “skulls” need to be cut into manageable sizes usually using an Oxy-Propane burner. There can be copious clouds of metallic fume produced in this thermal process that gives significant buoyancy to the fume. The control measures will include enclosure of the work in a mobile structure with extraction at the rear or upper surface. A generous flow rate is needed to ensure full capture of the fume and maintained visibility for operators. OptiFlo RC is the ideal collector.