Oil-rig workers in the Gulf of Mexico are concerned about their livelihoods one year after the Deepwater Horizon rig exploded causing the United States's worst-ever off-shore oil spill.<br /><br />The disaster has badly affected America's deep water drilling industry, with much of its equipment lying idle amid discussions on more stringent safety and environmental standards.<br /><br />Al Jazeera's John Terrett reports on the situation from Port Fourchan in Louisiana. (20 April 2011)
