Also called carotid artery disease, carotid stenosis is caused by a buildup of plaque inside the artery wall that reduces blood flow to the brain. The process of plaque buildup is called atherosclerosis. Carotid stenosis is a major risk factor for stroke and can lead to brain damage.
Most shipbuilders in the United States are privately owned, the largest being Huntington Ingalls Industries, a multibillion-dollar defense contractor, and the oldest family owned shipyard being Colonna's Shipyard in Norfolk, VA.
John Roach (shipbuilder) For other people named John Roach, see John Roach (disambiguation). John Roach (December 25, 1815 â January 10, 1887) was an American industrialist who rose from humble origins as an Irish immigrant laborer to found the largest and most productive shipbuilding empire in the postbellum United States, John Roach & Sons.