Kentucky, a Columbia Gulf gas pipeline exploded at 1 a.m. flattening homes, burning barns, and causing one casualty. The 30-inch natural gas pipeline was about 100 feet from Highway 76 and buried 30 feet underground. When it exploded, large rocks and sections of pipeline flew into the air, leaving a 60-foot crater. Columbia Gulf, part of NiSource's Columbia Pipeline Group, owns and operates more than 15,700 miles of natural gas pipelines, one of the largest underground storage systems in North America. The pipeline that exploded was carrying natural gas from the Gulf of Mexico to New York. 2014 (Feb 11) A Hiland gas pipeline exploded about six miles south of Tioga, North Dakota. Hiland was "blowing" hydrates, ice-like solids formed from a mixture of water and gas that can block pipeline flow, out of the pipeline. 2014 (Mar 14) A Northern Natural Gas Company pipeline erupted near the intersection of county roads 20 and O, about six miles north of Fremont, Nebraska. A company spokesman said, "In the summer you can tell if you've got a gas leak by vegetation, sometimes it dies in the ground." 2014 (May 26) A Viking gas pipeline explosion near Warren, Minnesota shot a fireball over 100 feet in the air. Roads within a two-mile radius were blocked off. Authorities suspected natural causes because there was still frost in the ground and the soil was wet. 2017 (November 16) TransCanada's Keystone Pipeline leaked 5,000 barrels of crude oil in Marshall County in northeastern South Dakota. Officials don't believe the leak affected any surface water bodies or threatened any drinking water systems. 2018 (June 7) A landslide caused a newly installed natural gas pipeline to rupture and explode in Marshall County, WV along TransCanada's Midstream Pipeline at 4:20 a.m., releasing $437,250 worth of natural gas. Flames from the ruptured pipeline were visible for miles, but no one was injured in the explosion. 2018 (September 13) Suspected over-pressurization of natural gas pipes by Columbia Gas caused multiple explosions and fires in 3 towns in Massachusetts (Andover, Lawrence, and North Andover), leaving one dead. 2019 (October) the Keystone pipeline ruptured causing over 383,000 gallons of oil to contaminate surrounding wetlands in North Dakota. By mid-November, state regulators raised the reported acreage of contaminated land to about 209,100 square feet of wetlands.(North Dakota) 2019 (August 1) An Enbridge natural gas pipeline ruptured causing a massive explosion in Lincoln County,