Over time, the extra work and pressure can stiffen blood vessels, leading to high blood pressure, heart attack, and stroke. It can also lead to heart failure. There is also some evidence that too much salt can damage the heart, aorta, and kidneys without increasing blood pressure, and that it may be bad for bones, too. High blood pressure is a leading cause of cardiovascular disease.
CMM is a mixture of methane & air released during the process of coal mining and must be vented for safety reasons. Methane has significant effects as a greenhouse gas being 21 times higher than that of carbon dioxide, therefore its capture and use in gas engines has significant environmental benefits.
Background - 15 April, 2010. From mining to combustion coal is the most polluting of all fossil fuels. Burning coal is the largest single source of climate changing carbon dioxide (CO2) emissions in the world. Coal burning is responsible for one-third of all our carbon dioxide pollution (CO2). It is the most polluting way to generate electricity accounting for over 70 percent of the CO2 emissions from the power sector.