When in 1939 war did break out between Germany on the one hand, and Britain and France on the other, President Franklin D. Roosevelt dutifully invoked the Neutrality Acts. However, he believed that this was a fundamentally different war from World War I.
Another advanced coal technology is coal gasification, a process in which coal is converted to a gas (called syngas) before it is burned, making it easier to separate CO2 as a relatively pure gas before power is generated.
Coal is a concentrated form of prehistoric biomass in the form of plant life and is the most abundant fossil fuel produced in the United States. Over 90 percent of the coal consumed in the US is used to generate electricity. Coal power is also used as a basic industry source for making steel, cement and paper, and is used in numerous other industries as well.