Bulletin #2335, Maine Farm Safety Program: Hand Signals Useful for Farmers (PDF) By Dawna L. Cyr, Farm Safety Project Assistant, and Steven B. Johnson, Ph.D., Extension Crops SpecialistIllustrations by Jennifer W. Johnson For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Workaround either field or farms