Port Sulphur was originally a typical company town, with its residents and civic life closely tied to the Freeport Sulphur Company. As the company divested itself of much of the town property and governance, it became more of a regular town with private individual land ownership. As the number of employees at the site dwindled, the Freeport Company became less important in everyday life and economic activity. At some point, most of the company-owned land not necessary for the sulphur operation was transferred to Plaquemines Parish or sold to private owners. The economic fortunes of the Freeport Sulphur Company declined during the 1980s and 1990s, resulting from the competitive forces of recovered Sulphur processed from sour oil & gas. In the early 2000s Freeport Sulphur shut down operations, as the price of sulphur dropped too low because large amounts of sulphur recovered during petroleum refining and from Canadian natural gas exploration were dumped on the international sulphur market. With inexpensive recovered sulphur in large supply, the large scale and expensive Frasch Process sulphur mining and storage operations proved to be uneconomical and were discontinued. The Freeport-McMoRan Port Sulphur facility was closed and sold. Hurricane Katrina destroyed much of what was left of the sulphur facility in August 2005, with a few buildings remaining. With the closing of Freeport-McMoRan Sulphur, the town has been seeking another economic identity.