Two of the three workers inside the plant received more than the lethal dose of seven sieverts (a sievert is the unit that measures the intensity of radiation's impact on the body).
In 2006, the first year of the plan, the country's reduction in energy intensity, which measures energy consumption per unit of economic output, was a mere 1.23%.
The carbon dioxide intensity of U.S. energy supply (CO2 per unit of energy) in 2009 also dropped as a result of lower natural gas prices relative to coal.
There was also a slight increase in the CO2 intensity of U.S. energy supply (CO2 per unit of energy) in 2010, which is in contrast to a drop of 2.4% in 2009.
But while the country's energy intensity--the amount of energy required to produce a unit of economic growth--is improving, it is not improving enough to offset the pace of growth of the economy, the population and living standards.