Abstract
Since the latter half of 1970's, the developments of new fuels derived from coal have been ivestigated. And till now, many coal slurry fuels were developed. Some of them have been produced commercially.
At present, the four countries, Sweden, United States, Canada and Japan, promote the commercially-developed coal slurry fuels as oil substitutions.
This paper refers to the situations of the industrial use of the coal slurry fuels in these countries.
