Physics with the MSU High Resolution Array, William G. Lynch for the HiRA collaboration, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA. − The High Resolution Array (HiRA) constructed as a collaborative effort between Washington University, St. Louis, Indiana University, Bloomington and INFN, Milano, Italy has been used successfully in several direct reaction decay spectroscopy experiments with exotic beams. This talk will review and discuss the physics of some of measurements performed with this array. These include programs in transfer reactions with inverse kinematics using 34,36,46Ar and 56Ni isotopes, single and multi-particle-decay spectroscopy, knockout reactions, and astro-physically important mass measurements and correlation measurements. Special emphasis will be placed on new results. This work is supported by the National Science Foundation under Grant No. PHY-1102511.