After one employee of Cemstone Products, Mendota Heights, Minn., saved the life of another employee who was having a heart attack, Cemstone officials decided to offer free, voluntary first aid training to their employees. The course included 4 hours of CPR training and 4 hours first aid, and was held at a local hospital. Manco Prestress Co. in San Antonio uses a different approach to train employees in first aid. The company trains six employees each year in first aid and CPR. Manco also employs a full-time registered nurse at its facility to perform first aid and health training.