A Day in the Ma’sh – Oil Refinery
Bridge Street Draw, July 26, 1897
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
The application of scientific principles to practical ends as the design, construction, and operation of efficient and economical structures, equipment, and systems; also the profession of or the work performed by an engineer. Good practices in the various subdivisions of this field, including civil, sanitary, and transportation engineering, are the foundation of any city's well-being and livability.