Schiff Hardin LLP elected associates Melody R. Cross, Adam J. Diederich, Victoria S. Pool and Jin Yan to partnership.•Heyl, Royster, Voelker & Allen P.C. has elected attorneys Keith B. Hill (Edwardsville) and J. Tyler Robinson (Springfield) to partnership.• Barack Ferrazzano Kirschbaum & Nagelberg LLP promoted attorneys Abdul R. Mitha, Emi Maia Nam, Justin J. Podjasek and Jack O. Snyder Jr. to partnership.• Aronberg Goldgehn Davis & Garmisa has named Amber Oleson LaFevers as a member of the firm. …