In August 1992, McTeel Industries was built with a small community within it to produce PW-30, a Nitrogen Oxide (NOx) based pesticide.

In October 1998, A NOx leak was detected from the facility alarms. In the attempt to stop the leak, the staff suffered severe chemical burns. The unsuccessful attempt left the community severely exposed to the gases. Production continued despite the leak.

In January 2000, With the demand for PW-30 falling and costs to contain the leak increasing McTeel was forced to start closing its facilities.

The entire community was locked down on Friday September 13, 2013. Leaving those within to fend for themselves. Studies indicate that the level of NOx exposure has left the survivors’ skin discolored, scarred, and their mental state possibly affected. Due to their altered appearance and forced adaptation to the environment they are now referred to as Coulro-Sapiens.