Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1950 0.088 0 0 0 0.088
1951 0.0424 0 0 0 0.0424
1952 0.138 0 0 0 0.138
1953 0.0519 0 0 0 0.0519
1954 0.0127 0 0 0 0.0127
1955 0.0405 0 0 0 0.0405
1957 0 0 0.0448 0 0.0449