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    Heinrich safety Law
    Heinrich's Law, also known as "Heinrich safety Law", "Heinrich accident Law" or "Heinrich Law", is the 300:29.1 Law by Herbert William Heinrich proposed,a famous American safety engineer.
    The law means that when an enterprise has 300 hidden dangers or violations, it is very likely to have 29 minor injuries or breakdowns, and one serious or fatal accident.
    Heinrich's Law is an American law proposed by Heinrich for the operation of insurance companies by analyzing the occurrence probability of industrial accidents.This law can be applied to the safety management of enterprises, that is, behind a major accident there will be 29 minor accident and 300 potential hidden troubles.

    Heinrich first proposed the causal linkage theory of accidents to clarify the causes of casualties and the relationship between them. According to this theory, the accident of casualty is not an isolated event, although the injury may happen suddenly at a certain moment, it is the result of a series of events

    Heinrich wanted to describe the occurrence and development of industrial injury accidents as a chain of events with a certain causal relationship, that is:
    (1) Casualties occur as a result of accidents.
    (2) The occurrence of the accident is due to: ①people's unsafe behavior;②the unsafe state of the object.
    (3) The unsafe behavior of people or the unsafe state of things is caused by people's shortcomings.
    (4) People's shortcomings are caused by bad environment, or by congenital genetic factors.