Workplace Legislation.- Risk parameters.- ATEX - Prevention.- ATEX - Equipment selection.- ATEX - Mitigating measures.- ATEX - Risk Assessment.- Zone Classification - Oil Fluids.- Zone Classification - Natural Gas.- Zone Classification - Dusts.- ATEX - Worldwide.- ATEX - Equipment Regulation.- ATEX - Ignition Hazard Assessment (IHA).- ATEX - Ignition Sources.- ATEX - Communicating IHA Results.- ATEX - Ex-marking.- Fires and Explosions.