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safe system of work for welding, safe work procedure for welding, safe working procedure for welding, importance of safe work conditions in welding, safe working practices for welding, safe work conditions for welding, health and safety for welding, safe welding practices in the shop, safety equipment for welding, welding fumes safe work, welding safe operating procedure, why is welding safe, importance of safety in welding, safety work practices in welding and cutting, is welding a safe job, facts about welding safety, safety in welding and cutting, welding safety training pdf