Martin Marietta Materials Inc (NYSE:MLM) shares are trading lower after the company reported a second-quarter FY24 revenue decline of 3% Y/Y to $1.764 billion, missing the consensus of $1.846 billion. Adjusted EPS of $5.26 missed the consensus of $5.40. Gross profit was $517 million (-8% Y/Y), and the margin contracted to 29% from 31% a year ago.  Building Materials business revenue was $1.7 billion (-3% Y/Y), and the corresponding gross profit was $501 million (-7% Y/Y). Aggregate shipments decreased by 2.8% to 53 million tons, while the average selling price increased by 11.6%, or 12% on an organic mix-adjusted basis. Adjusted EBITDA declined 2% Y/Y to $584 million in the quarter. Martin Marietta’s operating cash flow for the six months stood at $173 million, compared with $519 million for the prior year. The company held $109 million of unrestricted cash and $1.2 billion of unused borrowing capacity on its existing credit facilities as of June 30, ...