Twin Disc, Inc. (NASDAQ: TWIN), today announced that John H. Batten, President and Chief Operating Officer, will participate in a panel discussion on the Life Cycle of Hydraulic Fracking at Gabelli & Company’s 23 rd Annual Pump, Valve and Energy Infrastructure Conference in New York City on Thursday, Feb. 28, 2013, beginning at 11:30 a.m. EST. About Twin Disc, Inc. Twin Disc, Inc. designs, manufactures and sells marine and heavy-duty off-highway power transmission equipment. Products offered include: marine transmissions, surface drives, propellers and boat management systems, as well as power-shift transmissions, hydraulic torque converters, power take-offs, industrial clutches and control systems. The Company sells its products to customers primarily in the pleasure craft, commercial and military marine markets, as well as in the energy and natural resources, government and industrial markets. The Company’s worldwide sales to both domestic and foreign customers are transacted through a direct sales force and a distributor network.