Many of the leading base metal producing stocks are struggling to catch a bid this morning. Rio Tinto Plc (NYSE:RIO) is a leading stock in the base metals and materials sector that is coming under some early selling pressure. This market leader is declining by $1.31 to $60.22 a share. The decline in this market leader comes despite a strong copper, gold, and silver market today. RIO will have short term intra-day support around the $60.00 and $58.75 levels.