Zinc does not occur freely in nature but does exist in the ores of other metals. Zinc was widely used centuries before people knew what it really was. For instance, Romans use to smelt copper ores that contained zinc and were making weapons out of brass without even knowing it.
Starting a fire with water
Monday, March 31, 2014
Starting a fire with water
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment