Coal production declined in the 1970s because of
of subsidized petroleum fuels. However, in the late 1970s
announced a new effort to increase domestic coal use,
cement and electric power plants. Total coal production
steadily in the 1980s to reach 11 million tons in 1990.
reserves were located in southern Sumatra and eastern and
Kalimantan. Total measured reserves were 4.2 billion tons,
additional 12.9 billion tons classified as inferred
reserves and 15
billion tons of hypothetical reserves. A government mining
P.T. Tambang Batubara Bukit, produced the majority of coal
but ten coal cooperation contracts signed between 1981 and
with foreign investors were expected to produce a total of
20 to 25
million tons per year by 1994.
Data as of November 1992