(AP) EAST CLEVELAND, Ohio - At least one of five century-old incandescent light bulbs still works after being pulled from the cornerstone of a Cleveland-area building along with a time capsule. The Plain Dealer reported GE Lighting began a 100th anniversary celebration of the Nela Park operation on Monday at one of the park's original buildings at the East Cleveland research center. The lead-box time capsule held photos of Nela founders, journals, a book of technical specifications and a Plain Dealer. The 40-watt light bulbs were packed in sand above the box. A special socket was used to show off one bulb's longevity. The rest went to a research lab. The Nela industrial park is the headquarters of GE Lighting, and is listed as an historic place by the U.S. Department of the Interior. The Dealer said GE Lighting employs some 17,000 employees globally, including more than 700 at Nela Park, where cutting-edge research continues to this day. Source.