Buffaloam compost and soil products.

• Author: Peterson, Eric
• Position: SMALL BIZ: MADE IN COLORADO

Michael Duncan is an owner of Diamond Tail Ranch, as well as Duncan Oil and Silver Oak Winery in Napa Valley. The ranch in Glendevey (between Walden and Red Feather Lakes) has raised buffalo for the past 25 years, and currently has a herd of more than 700. Duncan looked to diversify his business and began composting buffalo manure in 2007. "Our wine is five years old before we sell it," Duncan says. "We took that model to compost." The aging process bumps the dung's organic content from about 4 percent to 35 percent. "There's a...