“People say it must not be a great posting, here at the mines,” says Herr Siedler. “They say: ‘Wouldn’t you rather be in Berlin? Or France? Wouldn’t you rather be a captain at the front, watching the lines advance, away from all this’ ”—he waves his hand at the window—“ ‘soot?’ But I tell them I live at the center of it all. I tell them this is where the fuel is coming from, the steel too. This is the furnace of the country.”

