HATTIESBURG, Miss. (WHLT) - Mar-Jac Poultry in Hattiesburg is once again under fire for workplace safety failures. The National Council for Occupational Safety and Health named Mar-Jac to its Dirty Dozen list for the second straight year. The group calls out companies that allegedly put workers' lives at risk by ignoring known hazards. Mar-Jac first appeared on the list in 2024 after Duvan Perez, 16, died at the Hattiesburg plant. His death mark…