Sept 25 (Reuters) - Martin Marietta Materials Inc (NYSE:MLM) MLM.N :
* MARTIN MARIETTA MATERIALS SAYS CO, UNIT ENTERED INTO TENTH AMENDMENT TO ITS CREDIT AND SECURITY AGREEMENT - SEC FILING
* MARTIN MARIETTA MATERIALS - PURSUANT TO AMENDMENT, SCHEDULED MATURITY DATE OF FACILITY WAS EXTENDED TO SEPTEMBER 25, 2019