After the project proposal received approval, Craig Henry, Architect and Preservation Coordinator at The Ohio State University, secured funding to move forward with the treatment. McKay Lodge Conservation Laboratory Inc. located in Oberlin, Ohio, was selected for the project and began work on March 29th of this year. Over the course of almost three weeks, Christina L. Simms, Conservator of Objects and Sculpture, Marcin Pikus, Conservator of Stone Sculpture and Architectural Features, diligently worked on the nearly 100-year-old monument.
The work took place on-site, under containment. Simms used a trusted technique of water mixed with a fine abrasive to blast the sculpture, gradually reducing surface corrosion on the bronze and taking it back to its bare state. After this mixture was removed from the surface, she applied chemical patination with heat. Through this process, she was able to return the bronze to its statuary brown color. This is how the sculpture would have looked when it was fabricated. With the desired color achieved, a protective coating of microcrystalline wax was applied with heat and brushed all over the bronze. The wax layer helps protect the bronze and patina of the sculpture. It also aids in preventing future excess corrosion from leaching into, and staining, the base.
With treatment of the sculpture completed, Marcin Pikus focused on the limestone base. All mortar from the joints was removed and the stone chemically treated in order to remove any natural material that had grown. Limestone is highly porous, so Pikus used repeated applications of cleaning products to decrease the staining as much as possible. After several cycles, the staining was drastically reduced. To repoint the joints, he used a preservation mortar and, lastly, caulked the seam between the base and pavement.