Pöyry (Appleton) LLC was founded in 1966 as Marathon Engineering Inc. with the objective of providing engineering services to the Forest Industry. Pöyry (Appleton) LLC, acquired by the Pöyry Group in 1990, is located in Appleton, Wisconsin, USA, and is comprised of multi-disciplined core staff engineers, designers and specialists. We have evolved our services to providing consulting, full service engineering and construction management for greenfield and rebuild projects in the fields of energy, alternate energy, chemicals and the forest industry.