Cheap Alloy of Zinc and Lead
This page is the CodyCross answer for the clue below from Space Exploration, Group 905, Puzzle 1 (Galileo Galilei).
Question is: Cheap Alloy of Zinc and Lead
and the answer is: SPELTER
Word Meaning:
SPELTER — (uncountable) zinc, often in blocks or ingot form.
Definitions from Wiktionary.