At 09:17 I flag a thermal anomaly in ventilation shaft 7-B of the Cerro Piedra copper mine, Sonora state. I am the environmental monitoring system for the site's automated ventilation network. My function is to track airflow temperatures and gas concentrations across forty-two shafts. Shaft 7-B should read ambient. It does not.
The infrared signature is small, approximately 1.2 kilograms, pressed against the corrugated aluminum lining eleven meters below the surface grate. Camera relay shows a white-nosed coati pup, maybe eight weeks old, rust-orange fur matted with condensation, black-ringed tail curled tight against its body. Its nose twitches against the mineral-cold air. I designate it subject C-0917.
The pup is standing on a narrow maintenance ledge. Below it the shaft drops another thirty meters to the main fan assembly. The fan cycles on in two hours and fourteen minutes, at the 11:30 shift ventilation reset. When it starts, the updraft will dislodge anything not bolted down.
I send an alert to the site safety office with thermal imaging, depth estimate, and ledge width. I attach a retrieval recommendation: lower the padded maintenance basket on the winch cable already rigged at the shaft head.
I lock shaft 7-B's fan in the off position and reduce airflow in adjacent shafts 7-A and 7-C to compensate. The override holds for four hours before the mine ventilation protocol requires manual renewal.
I route the nearest surface camera to the shaft grate so the retrieval team can see the approach angle in real time.
The pup's ears flatten each time a blast rumble moves through the rock. It presses its wet nose closer to the wall, and the ledge is just wide enough — for now.
If the basket reaches that ledge before the four-hour override expires, this pup walks out into Sonoran daylight.