Demo of NEBOSH National Diploma in Occupational Health and Safety online course. Visit elearningmarketplace.co.uk to read more about this course and to. Occupational Safety & Health via distance learning: The field of occupational safety and health has undergone significant changes over the past decades. These include. Occupational Safety and Health Training. Georgia Tech, one of the four original OSHA Training Institute Education Centers, offers more than 40 safety and health….