Scientist Eric Hansen retired from the Institute in April 2006 after more than twenty years with the GCI.

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Hansen, who began working at the GCI in 1985, researched proteins, fundamental aspects of color science, and the properties of adhesives, particularly Acryloid B72. His work on the consolidation of matte painted surfaces resulted in a published AATA supplement devoted to the subject. In more recent years, he headed up a GCI scientific research project—Lime Mortars and Plasters—devoted to the study of the fundamental characteristics of lime.

Hansen served on the board of the American Institute for Conservation (AIC) and the Western Association for Art Conservation (WAAC) and was one of the founders of the Research and Technical Studies Group of the AIC. Hansen received the President's Award for his contributions to the conservation profession at the AIC annual meeting in Providence, Rhode Island, in June 2006.

Hansen will continue his research as a consultant for the GCI.