Discovering Accident Causes: Before  any steps can be  taken in  it is essential  to find out:

The causes of previous  accidents and

 The existing  hazards that may  causes accident  unless  corrected.

These  activities  are necessary  not only  before  starting  the actual  procedures  for accident prevention but also  afterwards for they  must be given  continuous never ending attention otherwise  the real  efforts of accident prevention will  get out of hand. The supervisors  report of  accident  investigation is the basis  of all  analysis  of past accidents.

After  finding  the  potential  hazards by survey and inspection,  analysis must  be made  to select most important hazards to be attacked. The reasons for existence of hazards must  be found  when  these  do not  yield to corrections. Knowing and finding  the hazards is only  the beginning. These  must  be corrected / controlled.