well i don't know shit about your local laws for coal mining, just take into account, that not everything s always working as it is supposed to.
here are a couple of implications that (((might))) occour
There are a number of negative health effects of coal that occur through its mining, preparation, combustion, waste storage, and transport. Negative health effects from coal use within the U.S. include:[1]
Reduction in life expectancy (particulates, sulfur dioxide, ozone, heavy metals, benzene, radionuclides, etc.)
Respiratory hospital admissions (particulates, ozone, sulfur dioxide)
Black lung from coal dust
Congestive heart failure (particulates and carbon monoxide)
Non-fatal cancer, osteroporosia, ataxia, renal dysfunction (benzene, radionuclides, heavy metals, etc.)
Chronic bronchitis, asthma attacks, etc. (particulates, ozone)
Loss of IQ from air and water pollution and nervous system damage (mercury)
Degradation and soiling of buildings that can effect human health (sulfur dioxide, acid deposition, particulates)
Global warming (carbon dioxide, methane, nitrous oxide)
Ecosystem loss and degradation, with negative effects on health and quality of life.
ofc i got these informations from the first search result on jewgle, but i eecommend you, to at least looking up the possible problems. you might even find some information in your local newspaper.