In the U.S., power plants emit significant amounts of air  67 percent of all sulfur dioxide (SO2) emissions, 37 percent of mercury emissions, and 25 percent of all nitrogen oxide (NOx) emissions.
In the U.S., the power plants contribute greatly to emissions pollutants.
Cries of fear and confusion arose from the fires as the chained slaves worked against their bonds and unsuccessfully tried to grapple with the remaining whipmasters.