Administer and preserve libraries or collections of knowledge, for public or non-public entry via reference or borrowing. Work in a selection of settings, similar to academic institutions, museums, and firms, and with various types of informational materials, similar to books, periodicals, recordings, movies, and databases. Evaluate materials and develop equipment and processes to fabricate supplies to be used in merchandise that must meet specialized design and efficiency specs. Includes those engineers working with composite materials or specializing in one type of fabric, corresponding to graphite, metallic and steel alloys, ceramics and glass, plastics and polymers, and naturally occurring supplies. Includes metallurgists and metallurgical engineers, ceramic engineers, and welding engineers. Includes architectural, structural, traffic, and geotechnical engineers.