This excerpt taken from the WLK 8-K filed Feb 14, 2007.
Risks and Uncertainties
The Business has its manufacturing operations at Eastmans Longview, Texas facility. The Business is subject to varying degrees of risks and uncertainties. Eastman insures its business and assets, including the Business, against insurable risks in a manner that it deems appropriate.
In addition to ethylene, which is both internally supplied and purchased, the Business also acquires hexene and other additives to manufacture polyethylene. The Business receives hexene at the Longview, Texas facility via rail car from our suppliers. The Business hexene contracts expire over the next 15 months and are renewable for additional terms subject to mutual cancellation provisions.