[en] During the last one and a half years of the three-year period a major effort was underway in mounting and executing two experiments using pion beams on a polarized ¹³C target. In 1989 nearly three run cycles of beam time at the low energy pion (LEP) channel at LAMPF were devoted to this effort. The preparation for the experiments and the data taking were done together with colleagues from the Los Alamos National Laboratory, New Mexico State University, Arizona State University, and the Universities of Texas, Maryland, Pennsylvania and Colorado. Our group has taken over the responsibility for the replay of the data of Exp. No. 1025U which is presently underway. In addition, the group worked on several projects, some of which have been completed: nucleon knock-out reactions induced by positive and negative pions; pion elastic scattering experiments on ⁴He; scattering of polarized protons from ⁴He; nuclear structure studies with pions on p and sd shell nuclei. Furthermore, the group continued its participation in a ⁴He(p,p'c) experiment at the Indiana University Cyclotron Facility (IUCF)