On June 11, 2001, about 1615 eastern daylight time, a Cessna 170A, N9509A, was substantially damaged while landing at Mallory Airport (WV12), South Charleston, West Virginia. The certificated airline transport pilot and pilot rated passenger sustained minor injuries. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight conducted under 14 CFR Part 91. According to the pilot, the passenger had just purchased the airplane. The pilot was more experienced in the make and model airplane, and flew it to WV12. After landing on runway 33, a 2,000-foot long, 24-foot wide, asphalt runway, the airplane veered to the left. The pilot attempted to correct the airplane by applying right rudder and brake. However, it continued to travel off the left side of the runway, onto the grass. The pilot then pulled the mixture control to lean, and turned the fuel "OFF". The airplane struck a hangar about 15 mph, and the engine, propeller, and fuselage were damaged. The reported wind at an airport approximately 6 miles from the accident site, at 1554, was from 270 degrees at 8 knots. Examination of the wreckage by a Federal Aviation Administration inspector did not reveal any pre-impact mechanical malfunctions.