Contact us! Project Cornerstone, Inc.
3511 Camino Del Rio South, Suite 403
San Diego, CA 92108
Project Cornerstone's mission is to educate the public about the importance of local construction aggregates (i.e., sand, gravel and crushed stone) through hands-on learning in Science, Technology, Engineering and Mathematics (STEM). Construction aggregates are used to build roads, houses, schools and all other infrastructure; they are the cornerstone of our communities.
Project Cornerstone | 3511 Camino Del Rio S, #403, San Diego, CA, 92108, United States