If you thought SIF was a new concept, well it is relatively new – Heinrich discussed the concept in his 1931 and 1941 books…
“Undoubtedly a healthy condition exists when attention is concentrated upon the prevention of fatalities and serious injuries. This work should not be neglected, but the general problem will be more speedily solved if the causes of the accidents that produce all injuries, regardless of severity, are first selected as a basis for work, and then with a clearer knowledge of the frequency and the significance of no-injury or potential-injury cases, accident prevention is more intimately merged with routine industrial work.”
Industrial Accident Prevention – A Scientific Approach, H. W. Heinrich, Assistant Superintendent Engineering and Inspection Division, The Travelers Insurance Company, 1941

