In any analysis of the energy resources now available to the United States of America, coal occupies a dominant if not a preeminent position. The very fact that, within the borders of the U.S., there is more energy in the form of coal (more than three trillion tons) than in all of the other combined resources of fossil fuel-petroleum, natural gas, oil shale, and bituminous sandstone-makes coal loom as our most important source of energy for the remaining years of this century, and perhaps for centuries to come.
Iowa Science Teachers Journal
© Copyright 1975 by the Iowa Academy of Science
"Coal? What's That?,"
Iowa Science Teachers Journal: Vol. 12
, Article 3.
Available at: https://scholarworks.uni.edu/istj/vol12/iss2/3