Boeing (NYSE:BA) and the union representing 33,000 striking machinists will return to the negotiating table on Monday as the walkout reaches its fourth week.  The meeting will be the third meeting between the aerospace giant and the International Association of Machinists and Aerospace Workers District 751 (IAM) for federally mediated talks since

Boeing Co. is set to resume mediated negotiations on Monday with its largest union in a bid to end a crippling three-week strike by 33,000 factory workers.

The latest round of talks between Boeing and machinists, mediated by federal officials, broke off without progress, according to the union.