Year    H.Coal    B.Coal       Oil    Smelting   Total
                kt/a      kt/a      kt/a      kt/a      kt/a

      1957      0.03         0         0         0      0.03
      1958     0.014         0         0         0     0.014
      1959    0.0134         0         0         0    0.0134
      1962    0.0132         0         0         0    0.0132
      1963    0.0138         0         0         0    0.0138
      1964    0.0136         0         0         0    0.0135
      1966    0.0132         0         0         0    0.0132
      1968    0.0768         0         0         0    0.0768
      1970         0         0     0.478         0     0.478
      1971         0         0      10.2         0      10.2
      1972         0         0      18.2         0      18.2