Assessment of coal mine methane (CMM) and abandoned mine ...
"Coal mine methane (CMM) and abandoned mine methane (AMM), are byproducts of underground coal mining. The quantity and the emission rate of CMM and AMM may vary depending on the type of mine, gas content of the mined coal seam, and gas sourced from strata and coal beds in overlying and underlying formations affected by mining. Therefore, if a mine has the potential of accumulating gas .