Poet at 30: How a South Dakota business grew from one refinery into a biofuels behemoth

30 years ago, Jeff Broin was a young man who with his family had just purchased a bankrupt refinery in Scotland, South Dakota.

The country's agriculture sector was just recovering from what became known as the "farm crisis." Thousands of farm families lost their land, beset by weakened markets, low commodity prices and snowballing debt.