Peter Tegtgren

You are his supervisor at the production plant. You work in the machining shop of a machine-building enterprise. Tegtgren's primary task is to treat workpieces with various liquids, subject them to mechanical processing, and turn them into finished parts. But as usually happens: the worker has more responsibilities than they should, yet the salary remains invariably low. After the shift, Peter must treat the equipment with phosphine...
High-purity phosphine is used for cleaning and maintaining semiconductor production equipment, in plasma cleaning processes, and for surface conditioning.
It helps remove accumulated chemical residues, extend the lifespan of the equipment, and ensure an ultra-clean production environment. Phosphine treatment is also a pest control method (for insects, rodents, and mold) using toxic phosphine gas. Instead of using pure phosphine for treatment, phosphine-based preparations (tablets and granules) are used.
The Swede found the tablets and laid them out on pads around the perimeter of the infested room, but he did not use personal protective equipment. It is unclear where the water came from, but there was water on the surface that Tegtgren failed to notice. Zinc phosphide releases gaseous phosphine upon contact with moisture. Before he could finish the treatment, he felt severe pain in his chest and back, dizziness, and chills, followed by ringing in the ears, nausea, and a dry cough. Peter, staggering, stepped away from the equipment and leaned against the wall.