1 PART II DEFINITIONS C. COAL MINE The definition of a coal mine .The definition of a coal mine is important in that an individual is considered a . of preparing the coal so extracted, and includes custom coal preparation facilities.extraction and preparation of coal,A Procedure for the Supercritical Fluid Extraction of Coal . - USGSReagents Needed for Supercritical Fluid Extraction of Prepared Coal Samples . . Preparing the Sample Extract for Subsequent Processing .
extraction and preparation of coal