Philadelphia Gear Corporation announces an agreement with the Rowan Companies, Inc., of Vicksburg, Miss., to supply propulsion reduction gearing for the Gorilla VIII drill rig. Gorilla VIII is the latest addition to Rowan’s line of self-propelled jack-up drill rigs. Philadelphia Gear will provide Rowan with marine reduction gears, model 84 DHMGH. The gearing will be used to transmit 1500 hp from each of 4 variable speed DC motors at 1050 RPM to a fixed pitch propeller turning 280 RPM in the twin-screw installation. The gear drives for port and starboard, which are identical in this application, will be arranged for motors spaced 84 in. apart, two forward of the gears and two aft.