Data supplement to: Quality of coal mine drainage to Washington, 1975-77

Abstract

Introduction Presentation of data Methods of analysis Chemical and physical methods Biological methods Definition of terms References cited ILLUSTRATIONS FIGURES 1-9. Maps showing locations of: 1. Major coal-bearing areas in Washington 9 2. Coal mines sampled in Whatcom County coal deposits 3. Coal mines sampled in Skagit County coal deposits 4. Coal mines sampled in Issaquah-Grand Ridge area, Green River coal district, and Roslyn coal field 5. Coal mines sampled in Wilkeson-Carbonado coal field and Fairfax-Ashford coal area 6. Sampling stations in the Gallop Creek basin 7. Sampling stations in the Loretta Creek basin 8. Sampling stations in the Skookum mine drainage system and in Wilkeson Creek 9. Coal mines sampled in Centralia-Chehalis coal district and Eastern Lewis County coal deposits 10. Diagrammatic cross section showing borehole hydraulic coal mining process