GCN Circular 8434
E. Berger, R. Foley (Harvard), R. Simcoe (MIT), and J. Irwin (U. Michigan) report: "We observed the optical afterglow (GCNs 8424, 8425, 8430) of GRB 081028 (GCN 8421) with the Magellan Echellette Spectrograph (MagE) on the Magellan/Clay 6.5-m telescope starting on 2008 Oct. 28.326 UT for a total integration time of 1800 sec. We find a wide range of absorption features (including Ly-alpha, SII, NV, SiIV, CIV, FeII, etc.) at a redshift of z=3.038, which we interpret as the redshift of the GRB. In addition, we find several intervening CIV and MgII absorbers."