In gassy underground mines, methane explosions pose considerable risks to health, safety and the general welfare of workers. Explosions can also cause considerable damage to underground infrastructure. Therefore, underground gas management requires expert technical knowledge and implementation. Using empirical data from a 'methane-prone' underground mine of your choice, comment on the various aspects of the gas management plan and system used on the particular mine of choice.

Critically evaluate the issue of methane explosions, and the management thereof, on your mine of choice. Submit a com-prehensive report ( 5 technical pages). You should at the very least report on the following: Emissions of methane from rock strata/formations on your mine of choice Likelihood of methane layering (e.g. using Bakke and Leach equation/other methods) Mechanisms of gas explosions; applicable legal provisions, and associated compliance Methane extraction/drainage systems, gas control methods, including equipment used; and the general gas management An evaluation of the overall gas management plan and system on the mine