ISBN: | 978-5-5142-7659-2 |
High Quality Content by WIKIPEDIA articles! Coalbed methane (CBM or Coal Bed Methane),coalbed gas, or coal mine methane (CMM) is a form of natural gas extracted from coal beds. In recent decades it has become an important source of energy in United States, Canada, and other countries. Australia has rich deposits where it is known as coal seam gas (abbreviated "CSG").