A vibratory apparatus comprising: a deck assembly having a longitudinal axis, an inlet end, and an outlet end spaced from the inlet end along the longitudinal axis, the deck assembly comprising a plurality of deck sections (116, 118, 120) each having a plurality of openings therethrough, each deck section (116, 118, 120) having an upstream edge (122, 124, 126) and a downstream edge (128, 130, 132) disposed transversely relative to the longitudinal axis, the upstream edge disposed closer longitudinally to the inlet end and the downstream edge disposed closer longitudinally to the outlet end, the downstream edge of each successive deck section disposed closer longitudinally to the outlet end than the downstream edge of each preceding deck section, the upstream edge of each successive deck section disposed closer longitudinally to the upstream edge of each preceding deck section than the downstream edge of the preceding deck section is disposed to the upstream edge of the preceding deck section, thereby defining an overlapping portion (140, 142) of the preceding deck section and a non-overlapping portion (144, 146) of the preceding deck section, wherein the overlapping portion (140, 142) has larger openings than a region of the successive deck (118, 120) immediately below the overlapping portion (140, 142); and the overlapping portion having larger openings than the non-overlapping portion for each preceding deck section; an exciter coupled to the deck assembly; and a trough, the deck assembly disposed in the trough and the trough including first and second side walls (162, 164) parallel to the longitudinal axis, wherein each of the plurality of deck sections (116, 118, 120) has first and second side edges (170, 172, 174, 176, 178, 180) parallel to the longitudinal axis, the first side edge (170, 172, 174) of each of the deck sections attached to the first side wall and the second side edge (176, 178, 180) of each of the deck sections attached to the second side wall, and wherein the exciter has first and second sides (210, 212), wherein the first side of the exciter is coupled to the first side wall of the trough through a plurality of links and reactor springs, and the second side of the exciter is coupled to the second side wall of the trough through a plurality of links and reactor springs. a deck assembly having a longitudinal axis, an inlet end, and an outlet end spaced from the inlet end along the longitudinal axis, the deck assembly comprising a plurality of deck sections (116, 118, 120) each having a plurality of openings therethrough, each deck section (116, 118, 120) having an upstream edge (122, 124, 126) and a downstream edge (128, 130, 132) disposed transversely relative to the longitudinal axis, the upstream edge disposed closer longitudinally to the inlet end and the downstream edge disposed closer longitudinally to the outlet end, the downstream edge of each successive deck section disposed closer longitudinally to the outlet end than the downstream edge of each preceding deck section, the upstream edge of each successive deck section disposed closer longitudinally to the upstream edge of each preceding deck section than the downstream edge of the preceding deck section is disposed to the upstream edge of the preceding deck section, thereby defining an overlapping portion (140, 142) of the preceding deck section and a non-overlapping portion (144, 146) of the preceding deck section, wherein the overlapping portion (140, 142) has larger openings than a region of the successive deck (118, 120) immediately below the overlapping portion (140, 142); and the overlapping portion having larger openings than the non-overlapping portion for each preceding deck section; an exciter coupled to the deck assembly; and a trough, the deck assembly disposed in the trough and the trough including first and second side walls (162, 164) parallel to the longitudinal axis, wherein each of the plurality of deck sections (116, 118, 120) has first and second side edges (170, 172, 174, 176, 178, 180) parallel to the longitudinal axis, the first side edge (170, 172, 174) of each of the deck sections attached to the first side wall and the second side edge (176, 178, 180) of each of the deck sections attached to the second side wall, and wherein the exciter has first and second sides (210, 212), wherein the first side of the exciter is coupled to the first side wall of the trough through a plurality of links and reactor springs, and the second side of the exciter is coupled to the second side wall of the trough through a plurality of links and reactor springs.