MERRILLVILLE, Ind., July 31, 2012 /PRNewswire/ -- NiSource Inc. (NYSE: NI) representatives will ring The Closing Bell at the New York Stock Exchange (NYSE) at 4 p.m. ET on Wednesday, Aug. 1, to commemorate 50 years of trading on the exchange. The company also is celebrating the 100-year anniversary of Northern Indiana Public Service Company (NIPSCO), its combined electric and natural gas utility. "This event honors our current team, as well as NiSource's predecessor companies and employees that have served customers for more than a century," NiSource President and Chief Executive Officer Robert C. Skaggs, Jr. said. "We're proud of NiSource's tradition of delivering sustainable value to our customers, shareholders and other stakeholders. We are building on that legacy today via our customer-focused, investment-driven strategy for generating long-term, sustainable growth." At the celebration, seven NIPSCO employees will join Skaggs, Executive Vice President and NIPSCO Chief Executive Officer Jimmy Staton, NIPSCO President Kathleen O'Leary and NIPSCO Chief Operating Officer Mike Finissi. The group represents NiSource's nearly 8,000-strong workforce. The seven NIPSCO employees selected to attend the event are winners of a company contest. A live video of the event will be accessible through www.nyse.com. Additionally, other photos and video of the bell ringing is available by connecting with NYSE on Facebook ( www.facebook.com/NYSEEuronext), YouTube ( www.youtube.com/nysetv1) and Twitter ( www.twitter.com/NYSEEuronext). About NiSource NiSource Inc. (NYSE: NI), based in Merrillville, Ind., is a Fortune 500 company engaged in natural gas transmission, storage and distribution, as well as electric generation, transmission and distribution. NiSource operating companies deliver energy to 3.8 million customers located within the high-demand energy corridor stretching from the Gulf Coast through the Midwest to New England. Information about NiSource and its subsidiaries is available via the Internet at www.nisource.com. NI-F SOURCE NiSource Inc.