The Pennsylvanian Epoch lasted maybe 33 million years and was the latter part of the Carboniferous Period. The age that created vast coal deposits here in New Mexico. Within an hour of my house there are coal deposits and it is possible that I have coal beneath my feet. New Mexico coal is used to generate electricity and keeps our electrical prices low. A good thing for the people who are some of the poorest in the United States. In fact, my electrical usage is low and so inexp….