(Formerly numbered Conservation of Archaeological and Ethnographic Materials 210L.) Laboratory, four hours. Requisites: course M215 (or 216) and one course from 260 through 264. Corequisite: course 210. Research-based laboratory through object-based problem-solving approach in conservation materials science. Experimental techniques, characterization, and analysis of archaeological and ethnographic materials (using materials science principles and reverse engineering processes) to determine technological features, defects, and products of alteration. Hands-on experience with noninvasive imaging and spectroscopic techniques, sampling and sample preparation methods, analysis of microsamples. Letter grading.