A 12-member jury and six alternates — 10 men and eight women in all — were selected Thursday in the criminal trial of three former Peanut Corporation of America (PCA) executives in the U.S. District Court for the Middle District of Georgia. Opening arguments will begin Friday from government prosecutors and defense attorneys for former peanut company owner Stewart Parnell, his peanut broker brother Michael Parnell, and quality assurance manager Mary Wilkerson.