There are many types of explosives worker; the specific tasks required for each position depend heavily on the academic and practical training that a specific worker has completed. For example, some explosives workers are truck drivers who specialize in transporting these dangerous materials; these drivers must have a special driver's license that allows them to drive with volatile cargo. Other explosives workers deal more directly with dangerous materials; they may assemble and package professional-quality fireworks or pyrotechnic devices for the film industry, or prepare dynamite charges for the mining industry. Another type of explosives worker is responsible for actually placing the explosives where they need to go without damaging them or causing them to explode prematurely. Explosives professionals are also often tasked with keeping other nearby workers safe from blasting accidents and chemical spills, and should know how to arrange their explosives so that they accomplish their purpose without harming other workers or civilians in the area.