Coal is a comparatively stable material
It does not present leakage and spillage problems associated with oil and gas. Disasters involving coal-carrying ships are not a source of pollution. There is no safer energy source when handled and used correctly.
Source: World Coal Institute

A healthy balance between the environment and the economy is both possible and necessary.

The industry continues to promote technologies that meet the growing demand for electricity while simultaneously protecting the environment. Yet it is only through policies based on sound science and reasoned economics that the industry will be able to continue to build on its record of real environmental progress.
Source: Coalition for Affordable and Reliable Energy