Laurence Delisle Pellier’s contributions to metallurgical engineering include developing techniques for applying electron microscopy to metallurgical problems, researching alloy manufacturing methods for fine instruments and wires, and establishing a breadth of metallurgical testing procedures throughout her career. Pellier was a specialist in physical metallurgy, particularly light and electron microscopy. She was a prolific author of technical papers and a US patent holder for the gold plating of surgical needles. Pellier was honored by the Society of Women Engineers as the 1962 Achievement Award recipient.