As geological and mining conditions become more complex and as overall mining economics become more marginal, short and long range decision making regarding multiple seam surface mining becomes more difficult. the decision making problem involves a study of economics, cut off grades and ratios, equipment capabilities, secuencing and selective mining practices. This paper is concerned primarily with multiple seam mining of bituminous coal. The research has led to the development of an economic decision making model for use as a day to day tool to aid mine operators and pit geologists to decide what and how to mine.