Large investments in copper projects show that miners are optomistic about the metals long term prospects, notes mining audience manager Michael McCrae. On Saturday McCrae recorded an episode of Roundtable. Copper had another down week, with its second consecutive drop. Copper futures were down 1% to end at $4.37. Big copper investments were announced this week, despite the metal's weakness. Reuters reports that copper miner Freeport Indonesia launched its $3.7 billion cop...