Quarry use at the Hermanas Ruin, a San Luis Phase community in southwestern New Mexico, is analyzed in light of modern optimization theory. Initial results of this analysis suggest that many of the changes in lithic use at this site resulted from a process of optimizing the procurement of five different lithic materials (basalt, Pauley chert, Pauley jasper, agate, and obsidian) so that all related costs were minimized. This research has broad implications for archaeological quarry analysis as it suggests that economic analyses of multiple material lithic procurement systems will provide insights into prehistoric quarry use not apparent in traditional quarry analyses. Characteristics of stone such as sharpness and weight are value factors in determining how much or whether a particular stone was quarried and for what purpose; linear programming is used to assess these variables.