Carbon Fuel Used in Smelting
This page is the CodyCross answer for the clue below from The 1950s, Group 1807, Puzzle 4 (Economic Growth).
Question is: Carbon Fuel Used in Smelting
and the answer is: CHARCOAL
Word Meaning:
CHARCOAL — (countable, uncountable) impure carbon obtained by destructive distillation of wood or other organic matter, that is, heating it in the absence of oxygen.
Definitions from Wiktionary.