Why did the United States shift from coal to petroleum and natural gas when we have much larger reserves of co?

Why did the United States shift from coal to petroleum and natural gas when we have much larger reserves of coal that of the two hydrocarbon fuels?

One Response to “Why did the United States shift from coal to petroleum and natural gas when we have much larger reserves of co?”

  1. just me Says:

    Coal is a fossil fuel and has a much higher Co2 content. Natural gas is pretty clean when it burns and petroleum to a lesser extent. Burning coal to meet the energy demands of the U.S. is VERY expensive when you consider the factories, machinery and transporting the coal. Coal is not very clean when burnt and the older factories have to be retro-fitted to "clean" the exhaust which can be very expensive too.