On June 11^th, 13 people attended the first installment of the WGLC Minnesota Education Series.  Angela Wolf Scott from MacDonald & Mack Architects presented on the history of Platteville limestone and its production in Minnesota.  She expanded this analysis and described how the limestone is impacted once it is exposed to heat, which was important to understand on her recent project at the Mill City Museum.  At this site the stone has been exposed to two fires, leaving part of the walls in exposed ruins.  Angela’s analysis and research on the existing stone has led to a thoughtful and careful repair methodology on these ruin walls. WGLC would like to thank Angela for her presentation!