OMAHA, Neb. — U.S. railroads were warned to take certain cars out of service March 9 after Norfolk Southern discovered loose wheels on a car involved in last weekend’s derailment in Ohio.

Norfolk Southern Corp. agreed to acquire Cincinnati Southern Railway, tightening the company’s grip on a critical 337-mile line it already operates under a lease agreement.

Norfolk Southern Corp. saw increases in profit and revenue in the second quarter, the Class I railroad reported July 28.

Norfolk Southern Corp. joined the list of freight rail carriers reporting record financial results for the third quarter.

Former Chemical Safety Board Chair Vanessa Sutherland has started a new position as a vice president at Norfolk Southern Corp., the company said.

Railroad Norfolk Southern Corp. reported first-quarter net income of $552 million, up 27% from $433 million in the first quarter a year ago.

Norfolk Southern Corp. released on Jan. 24 results for the fourth quarter and full-year 2017, beating analyst expectations and growing its intermodal revenues by 14% in the quarter.

ATLANTA — Norfolk Southern Railway has filed a federal lawsuit against an Alabama company, claiming the company failed to use proper protective coating on more than 4.7 million wooden railroad ties.

Norfolk Southern Corp. systematically refused to hire or retain people with a wide range of real or perceived medical problems including cancer, diabetes, arthritis and heart problems, the federal government claims in a federal lawsuit filed Sept. 27 in Pittsburgh

Norfolk Southern Corp. completed a red-hot second quarter for rail freight carriers, posting a 23% increase in profits and a 15% increase in operating income reversing a lackluster year in 2016.