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Resonance-decay spectroscopy is used to study particle-unbound excited states produced in interactions of E/A = 50 MeV 12 Be on polyethylene and carbon targets. The particle-unbound states are produced in a variety of reaction mechanisms, ranging from projectile fragmentation to proton pickup. New proton-decaying excited states are observed in 9 Li(E * = 14.1 ± 0.1 MeV, = 207 ± 49 keV) and 10 Be(E * = 20.4 ± 0.1 MeV, = 182 ± 74 keV). In addition a new α-decaying state is observed in 13 B(E * = 13.6 ± 0.1 MeV, 320 keV). Also found was a 8 Be state with E * = 23 MeV, = 616 ± 30 keV, which decays to the p + 3 H + α channel. Correlation between the fragments indicates that the decay is initiated by a proton emission to the 4.63-MeV state of 7 Li and the spin of the state is J > 2. A second T = 2 state was confirmed in 12 B at 14.82 MeV, which decays to the p + 11 Be, 3 H + 9 Be, and α + 8 Li channels. Its width was found to be 100 keV and its spin is consistent with J π = 2 + .