Behind every light switch is a coal miner. Inside every car engine is a roustabout and mud logger. Our smartphones charge on coal, our vehicles drink gas and oil given up by our prehistoric ancestors and pumped from the ground by people we never meet. Meanwhile, there are Dani and Cap Pellegrin, Mr. John, Robert Brooks, Allen and Mora and Jacob. They are just as human in their feelings, just as American, yet somehow hidden, forgotten...