Building a Shared Map Layer Across Rescue Shifts

Rescue work runs on rotations. A breathing-apparatus team burns through its apparatus every two to four hours and hands off to fresh squads who need to know exactly what the prior shift mapped, shored, and confirmed. Building a shared map layer that survives those handoffs is the difference between a coordinated multi-shift rescue and a sequence of restarts.

A mine rescue incident rarely ends in a single shift. Copiapó took 69 days. Quecreek took 77 hours. Even routine roof-fall recoveries typically span multiple rescue-team rotations as breathing-apparatus time limits force squads to rotate every two to four hours. Each rotation creates a handoff gap: the outgoing team knows where they mapped, where they shored, and what they saw; the incoming team needs that knowledge within minutes of crossing the fresh air base.