product types aggregates ready mixed concrete asphalt cement cement treated materials magnesia chemicals and lime investors corporate governance reports & filings events & presentations press releases stock performance shareholder information financials sustainability safe operations community well being employee well being environmental stewardship about us company news company history code of ethical business conduct operating divisions contact us erocks haulers & suppliers careers upcoming events martin marietta copyright 2016 terms it s not just what we make . it s what we make possible . a leading supplier of aggregates and heavy building materials martin marietta provides the products to build the world around you . let us help play a role in your next project . locate a facility need help calculating a materials estimate go to product calculator in the news shining like diamonds martin marietta has named its inaugural class of diamond award winners . the 10 locations honored represent the safest and most productive operations across the entire company . learn more in the news aug 02 martin marietta reports second quarter results record net sales gross profit and net earnings ; consolidated gross margin excluding freight and delivery revenues expands 340 basis points ; earnings per diluted share increases 56 % ; aggregates product line pricing up 7 % featured environmental initiative a tremendous responsibility martin marietta s magnesia specialties division recently took on two sustainability projects designed to preserve precious natural resources in manistee michigan and woodville ohio . our peoplemake us possible . learn more about us processing request ...