 COLLIERVILLE, Tenn.--BUSINESS WIRE--Mueller Industries, Inc. NYSE: MLI today reported 2020 fourth quarter and full year results. Fourth Quarter: Operating income of 65.0 million versus 44.4 million Net sales of 675.9 million versus 543.8 million Net income of 36.4 million versus 28.2 million EPS of 0.64 versus 0.50 Full Year: Operating income of 245.8 million versus 191.4 million Adjusted operating income of 227.5 million versus 191.4 million adjustments include 3.8 million fo 