Darling International Inc. · Irving, TX United States ·(NYSE: DAR)

It's not the most darling of businesses -- in fact it's messy and it's stinky -- but Darling International, the largest independent rendering operation in the US, is willing to do it. The company collects and processes animal by-products and used cooking grease from approximately 116,000 restaurants, butcher shops, grocery stores, and independent meat and poultry processors throughout the US. Its rendering operations produce yellow grease, tallow, and meat, bone, and blood meal, which Darling sells in the US as well as internationally to makers of soap, rubber, pet and livestock feed, and chemicals. To read the full description, subscribe now.