was ignited by a spark. The equipment was installed in 1950. On March 6, 2002, at Jeffersonville, Kentucky, a TGP pipe manufactured in 1950 ruptured at a compressor station, causing a fire and explosion. The failure originated at a longitudinal crack in a saddle fillet weld. The explosion caused $2 million in property damage. On March 26, 2002, at Clay, Ohio, external corrosion thinned a pipe manufactured in 1966 to a point that it cracked and leaked natural gas. On May 21, 2002, at Kensington, Ohio, a landowner discovered dead vegetation in vicinity of a TGP pipeline. Company personnel investigated and found a pinhole leak on the longitudinal seam, a manufacturing defect. The pipe was manufactured in 1956. On September 24, 2004, at Hopkinton, Massachusetts, a TGP leak occurred in 24" diameter pipe at a "high consequence area" just upstream of a compressor station, in pipe manufactured in 1977. 28 people were evacuated as a precaution. The leak was apparently due to the pipe resting on a rock ledge which damaged the pipe, causing a pinhole perforation. On December 29, 2005, in Allen County, Kentucky, a 30-inch diameter TGP pipe manufactured in 1957 ruptured, leading to evacuation of more than 200 people. "It sounded like a jet plane ... just roaring." What made the situation so critical was the pressure and amount of gas flowing through the pipe. The failure was attributed to combined effects of pre-existing cracking introduced during original construction and longitudinal stresses induced by the terrain. The leak cause property damage of $908,032. On July 22, 2006, near Campbellsville, Kentucky, a TGP 24" diameter pipeline exploded, blowing 25-foot chunk of pipe out of the ground; it landed 200 feet away, the pipe twisted and mangled, its external coating burned off. The pipe ruptured due to external corrosion more than two feet long at the bottom of a valley in an area of wet shale, known to cause corrosion on buried pipelines in this part of Kentucky. On February 17, 2007, at Cypress, Texas, TGP's 31-inch natural gas pipeline exploded 4 hours after a bulldozer hit it. Residents reported a loud explosion that shook the ground enough to set off car alarms, as well as "a rumbling sound" and a bright orange fireball. Firefighters "backfilled" the break with nitrogen. The pipe was manufactured in 1948. On November 30, 2010, a 30" diameter Tennessee Gas Pipeline failed in a