Favorite this☆ Chunk of pure copper Description: View of a 6,000 pound chunk of pure copper resting on a sled with wooden barrels in background. Written in lantern slide ledger, "Copper 6,000 lbs." Recorded in lantern slide ledger: "M/Mines & mineral resources-Copper 6,000 lbs." Details Resource ID: EB02m282 Subject: Copper mines and mining--Michigan Copper ores--Michigan Lantern slides Date Issued: Unknown year Format: 1 transparency : glass ; 3 x 3 in. Member of: Burton Historical Collection Negative Number: BHC lantern slide no. 523; BHC glass neg. no. 2341 Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.