Gas drainage is considered one of the most effective controls in preventing coal and gas outbursts. The advances in
mining equipment technology over the last 20 years have led to a significant increase in coal mine production, resulting
in increased coal mine gas emission during the coal extraction process. High gas emissions, if not effectively managed,
may exceed the diluting capability of the mine’s ventilation system, potentially exceeding the statutory limit, resulting in
gas related production delays. The development of underground to inseam (UIS) gas drainage is discussed. The study is
focused on a range of factors which impact gas drainage and proposes actions to improve drainage performance.