Screening for classifying a material

A screening for use in classifying material flowing through said screening, said screening comprising:

• (a) a plurality of warp screening elements, said plurality of warp screening elements includes a first warp screening element, said plurality of warp screening elements further including a second warp screening element, said first warp screening element having a cross-sectional shape different from a cross-sectional shape of said second warp screening element;
• (b) said first warp screening element having a first uppermost surface, said second warp screening element having a second uppermost surface, said first uppermost surface is offset vertically from said second uppermost surface;
• and,
• (c) at least one retaining member operably associated with said plurality of warp screening elements to form an integral screen segment having a plurality of openings for permitting material to be classified to pass through said openings.

A screening for use in classifying material flowing through said screening, said screening comprising:

• (a) a plurality of warp screening elements, said plurality of warp screening elements includes a first set of warp wires, each warp wire in said first set of warps wires having a plurality of horizontal undulations, said plurality of warp screening elements further including a second set of straight warp wires;
• (b) at least one retaining member operably associated with said plurality of warp screening elements to form an integral screen segment having a plurality of openings for permitting material to be classified to pass through said openings, each of said plurality of openings being formed at least in part by one wire from said first set of warp wires and one wire from said second set of warp wires;
• and,
• (c) each wire in said first set of warp wires having a cross-sectional height greater than each wire in said second set of warp wires.