For the last two years, a small group of doctors and scientists with the U.S. Centers for Disease Control and Prevention have spent their days in coffee shops around the country. The doctors and scientists gathered information from corner cafés with a lone roasting oven to large-scale processors with more than 150 workers. They assessed the various threats — primarily the air — and gave breathing and other medical tests to employees.

Their preliminary findings, based on 11 site reports that have been released in recent monthsindicate widespread problems that jeopardize employee health across the estimated $74 billion industry. Milwaukee Journal Sentinel