Here are five top miners that should be dropped from your stock portfolio: Posco ( PKX ) Operating in Korea, Posco (NYSE: PKX ) is an integrated steel producer that starts off the list of the top metal and mining stocks to sell now. Over the past 12 months, PKX's stock performance has been anything but thrilling. Thanks to the prospect of commodity inflation due to a weak dollar and glimmers of an economic recovery, many experts are predicting gold prices to rally and silver to continue to set new highs in the months ahead.