Atrial tachycardia is a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance.
Page Content. Northern Natural Gas Company (Northern) is a subsidiary of Berkshire Hathaway Energy based in Omaha, Nebraska and has been in business since 1930. Northern owns and operates the largest interstate natural gas pipeline system in the United States.
In 2007 Linn doubled its holdings by purchasing many of the oil and gas assets of Dominion Energy, mainly in Oklahoma, for $2.05 billion. Linn bought the holdings of BP in the Hugoton Basin, the large gas-producing region from southwestern Kansas into the Texas Panhandle, in March 2012 for $1.2 billion.