DENVER - A group of former Boeing Co. workers suing on behalf of a class of approximately 700 others failed to prove that widespread age bias was at play when the company that purchased two Boeing sites decided which of Boeing's workforce it would rehire (Perry Apsley, et al. v. The Boeing Company, et al., No. 11-3238, 10th Cir.; 2012 U.S. App. LEXIS 18161).