Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1950 1.17 0 0 0 1.17
1951 1.24 0 0 0 1.24
1952 0.18 0 0 0 0.18
1953 0.286 0 0 0 0.286
1954 0.203 0 0 0 0.203
1956 0.0439 0 0 0 0.0439