MSHA needs to replace ten steel and glass doors across various buildings at MSHA’s A&CC campus. Ten (10) exterior doors need replaced throughout the campus due to deterioration. Degraded doors pose a ... MSHA needs to replace ten steel and glass doors across various buildings at MSHA’s A&CC campus. Ten (10) exterior doors need replaced throughout the campus due to deterioration. Degraded doors pose a safety hazardous to building occupants.