Preserve from each actual custodian
Unchanged site, condition, access, fall protection, trench, scaffold, electrical source, material, vehicle, machine, tool, photographs, measurements, witnesses, and video: Injured person, coworkers, responders, Detroit departments, Wayne County, MSP, MDOT, transit actors, employers, fleet operators, private properties, contractors, tow companies, and insurers can hold different parts of the record. Site and image sources may include DDOT and QLINE vehicles, downtown and neighborhood businesses, parking systems, event properties, industrial sites, fleet cameras, dashcams, and involved vehicles Owner, developer, construction-manager, general-contractor, subcontract, scope, schedule, change order, daily report, meeting, and actual-control records: Property owner, developer, construction manager, general contractor, subcontractors, employer, designers, suppliers, and project-management systems Permit, plan, inspection, safety program, hazard analysis, training, toolbox talk, incident, MIOSHA, maintenance, and equipment files: Detroit BSEED permits and inspections, public project files, owners, developers, general contractors, subcontractors, employers, equipment owners, and MIOSHA Employment, workers compensation, third-party insurance, medical, wage, functional, lien, and future-care proof: Detroit Medical Center hospitals, Henry Ford Hospital, Corewell Health Dearborn Hospital, rehabilitation providers, and the Wayne County Medical Examiner; employer and carrier, non-employer defendants and insurers, treating providers, unions when applicable, family witnesses, and the injured worker