Sapphire Lung

You are the only union doctor for stretch of mountains. Your job is simple:

Every man who works the floor of an aluminum mill gets their lungs checked, once a year.

Sapphire Lung is a story of Industrial Injuries, Unions, and the Three Laws of Transmutation. It was supposed to be a simpler project than Speed Demons, but still managed to have 4<x<16 endings.