Similar Material ad p. 1161 Mine, Mining Mine, Mining Insight on the Scriptures, Volume 2 ‘Out of the Mountains You Will Mine Copper’ The Watchtower Announcing Jehovah’s Kingdom—2013 Copper Aid to Bible Understanding Copper—Man’s Long-Time Servant Awake!—1973 Metals Insight on the Scriptures, Volume 2 Metals Aid to Bible Understanding Copper, Brass, Bronze Insight on the Scriptures, Volume 1 Iron (Steel) Aid to Bible Understanding The Biggest Man-Made Hole in the World Awake!—1993 Iron Insight on the Scriptures, Volume 1