A brig is a United States military prison aboard a United States Navy or Coast Guard vessel, or at an American naval or Marine Corps base. The term derives from the Navy's historical use of twin-mast sailing shipsâor brigsâas prison ships.
The network of crude oil pipelines in the U.S. is extensive. There are approximately 55,000 miles of crude oil trunk lines (usually 8 - 24 inches in diameter) in the U.S. that connect regional markets. The U.S. also has an estimated 30,000 to 40,000 miles of small gathering lines (usually 2 to 6 inches in diameter) located primarily in Texas, Oklahoma, Louisiana, and Wyoming with small systems in a number of other oil producing states.
On November 6, 2015, President Obama chose to deny the required presidential permit for the Keystone XL Pipeline, a proposed 1,179-mile (1,897 km) cross border crude oil pipeline which had been under review by the U.S. Administration for over seven years.