After an accident, participants and organisers should document the route section as precisely as possible. Photographs can show nets, padding, signs, marshals, tracks and sight lines. The location should be photographed from several directions with a clear time reference.
Also preserve the final invitation, registration, rules, course plans, amendment messages, marshal lists and incident logs. After a collision with another slope user, witness accounts, lift or slope records and the actual traffic pattern may be important. A general description of the event rarely answers this case-specific question.
An injured person should collect medical findings, the accident report, rescue records and the later treatment history. For damaged equipment, photographs, purchase records, repair estimates and information about its condition before the race are useful. Keep the equipment until the cause has been documented.
The article on ski touring during lift operations explains additional issues when an ascent track and slope traffic meet. The ski touring topic area provides further orientation.