Paleocene Coal Basins
The Clean Air Act with its 1990 amendments has created renewed interest in these coals because much of the coal in these regions is relatively easy to mine and contains amounts of potentially hazardous chemical elements that are generally below anticipated threshold values to be set by the Environmental Protection Agency. As a result of this study, significant advances have been made in understanding the evolution of coal basins and how geological history affected coal distribution, coal rank, and concentrations of potentially hazardous chemical elements. By assembling information and data on the various aspects of coal formation, the Tertiary Coal Basins team is able to determine the approximate distribution of compliant coals in the western United States. This is an important step because most of the coals that are economic, environmentally clean, and easy to mine are publicly owned.