September 1, 2017 | — A cloud of dust billows from deep under the coal train as each car drops 100 tons of black rock into large underground hoppers at the Navajo Generating Station.

The electric train provides the lifeblood for the biggest coal plant in the West. Its route across the high-desert reservation south of Navajo National Monumentsustains a stockpile of coal outside Page for three, 750-megawatt generators to burn around the clock

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