Coal Bed Methane

Coal Bed Methane (CBM)

Generic term for gas found in coal seams

Coal Mine Methane (CMM)

Methane component of gases captured in a working mine by drainage techniques

Abandoned Mine Methane (AMM)

Methane released from abandoned mines after drilling

Ventilation Air Methane (VAM)

Very dilute type of CBM mixed with ventilation air running through the mine

coal bed methane

To extract the gas a hole is drilled down into the coal seam and is cased. The coal seam is perforated which then enables the gas to flow to the surface, where it is gathered and processed as required.