Due to a large variety of job duties (both routine and non-routine), certain duties also may involve, a variety of physical activities including bending, lifting, stooping, turning, twisting, pushing, pulling, raising arms above shoulders and head, standing, working in enclosed areas, climbing stairs or ladders, and operating heavy machinery. Omnium: Land O'Lakes Inc., WinField United's manufacturing division is an industry leader in the production of Crop Protection Products, Adjuvants and Crop Nutrition Products marketed under the WinField United brand.