Chapter IN
INTRODUCTION

By R.M. Flores and D.J. Nichols

in U.S. Geological Survey Professional Paper 1625-A

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Table IN-2. Arithmetic means of pounds of SO2 per million Btu (SO 2 /MMBtu) of coal in the Powder River and Williston Basins compared to similar analyses from other coal-producing regions in the conterminous United States
Parameter Powder River Basin* Williston Basin Colorado Plateau Gulf Coast Illinois Basin Appalachian Basin
SO 2 /MMBtu 1.2 2.5 1.5 2.1 5.0 3.4
 * Only the Wyodak-Anderson coal zone is included in the Powder River Basin in this study. All data on an as-received basis.

 
Chapter IN  - Introduction -  U.S. Geological Survey Professional Paper 1625-A