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.
Methane (CH4) is a greenhouse gas. It affects the radiation budget of Earth directly (by intercepting heat radiation) but also indirectly, by reacting with other trace gases in the atmosphere, and by delivering water molecules upon oxidation in the stratosphere.