Of course, this will make it more difficult for you to determine the original location of evidence, but effective interviews will help you to construct the scene. Of course, it's not to establish blame, but rather to accurately determine the surface and root causes for the accident. The longer you wait to investigate, the more unlikely you'll be able to fulfill this very important purpose . Somehow, tools, equipment, and sometimes people just seem to move or disappear from the scene. It's important that an effective procedure be developed to protect material evidence so that it does not get moved, or disappears.
Accidents are traumatic events.
There may be physical trauma to the victim and others whenever a serious accident occurs in the workplace. Everyone is affected somehow. As time passes after an accident conversations with others and individual emotions distort what people believe they saw and heard. After a while, the memory of everyone affected by the accident will be altered in some way. This type of distortion can have nothing but negative effects on your success as an accident investigator.