What is the term for the practice of removing gas from coal seams using wellbores and pipelines?

The practice of removing gas from coal seams using wellbores and pipelines is known as methane drainage. This process is critical in mining operations, particularly in underground coal mines, because it helps mitigate the risks associated with methane accumulation, which can be hazardous due to its flammability and potential to form explosive mixtures in the presence of air.

Methane drainage involves the extraction of methane from coal seams before, during, and after mining operations, thereby enhancing safety for miners and improving the overall efficiency of the extraction process. By reducing methane concentrations in the mine atmosphere, the risk of explosive incidents is significantly lowered, and the workplace becomes safer for all personnel.

The other options are not correct as they refer to different concepts. Gas venting involves the release of gas from a source without extraction techniques, while air supply relates to providing fresh air for ventilation in mines rather than extracting gas. Gas monitoring pertains to the detection and measurement of gas concentrations, rather than the physical removal of gas from coal seams.