- Witness statements from those who were present at the time of the accident
- Photographs or video recordings of the scene and any equipment involved
- Physical evidence such as damaged equipment, debris, or materials
- Maintenance records or inspection reports for equipment or machinery involved in the accident
- Data from any monitoring or control systems that were in place at the time of the accident
- Accident reports or incident logs from the company or organization
- Emergency response logs or reports from the incident
- Training records or certifications of the involved employees or workers
- OSHA or other regulatory agency reports or inspections
- Medical records of the injured parties or any fatalities
- Toxicology reports for any involved parties
- Weather reports or environmental factors that may have contributed to the accident
- Compliance or non-compliance with safety regulations and standards
- Relevant policies and procedures for the company or organization involved
- Job hazard analyses or risk assessments for the tasks or activities involved
- Equipment or machinery manuals or instructions
- Contractor or subcontractor agreements and any relevant work permits
- Safety audits or inspection reports for the workplace or area involved
- Any previous incidents or near-misses involving the same equipment, location, or activity
- Root cause analysis reports or investigations of the incident.