2. Data Gathering and Assembly
Data gathering should be performed systematically and always with the investigation objectives in view. The methods involved are mainly by way of interviews, photographs or sketches and data maps, models, charts, scales and other processes. Below are some important points to consider when gathering essential relevant data:
1. During the interview process, questions should broach three significant factors: human, physical and system.
2. Interviews should not interfere with the work of the rescue or medical teams. It is important to place priority on the treatment and prevention of further injuries over investigations.
3. Take decisive steps to preserve evidence. If the investigation of the accident requires the participation of local police authorities or the coroner, the site and all evidence therein should not be moved unless with prior approval from the authorities.
4. Take photographs or videotapes of the site and of the evidence in their undisturbed states. Create sketches of the general area for purposes of recording measurements, and make notes of the time of occurrence. Also, note the weather conditions. It is likewise important that all data gathered are assembled in chronological sequence.
Please continue on page 2, with pointers for identifying risks and identification of risk-control measures--and more.