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 ash which is a by-product of coal mining is used as a filler for tennis rackets ,golf balls and linoleum. The average coal miner is 50 years old and has 20 years of experience. Coal has been used as an energy source for hundreds of years and has been part of international trade as long ago as the Roman Empire.