A while ago, conservators, archaeologists, shipyard employees, and a corrosion expert removed a core sample from Monitor‘s revolving gun turret armor. Although long-term analysis is ongoing, yesterday we utilized a portable XRF analyzer to perform additional elemental analysis. We’ll let you know what our results are after we have a chance to review them. In the meantime, check out this picture. The 2″ metal disc is a section of the turret’s iron armor plating. It is resting on the XRF analyzer.