The results reported in [1-2] below are on subsets of a 111-order problem, which can be obtained here.

Many more, and more recent, results can be found here, courtesy of the beCool Group at UC Louvain.

1. A. M. Frisch, I. Miguel, T. Walsh. “Symmetry and Implied Constraints in the Steel Mill Slab Design Problem,” Proceedings of the CP‘01 Workshop on Modelling and Problem Formulation (Formul‘01), pages 8-15, 2001.
2. B. Hnich, Z. Kiziltan, I. Miguel, T. Walsh. “Hybrid Modelling for Robust Solving,” Annals of Operations Research 130 (1-4), pages 19-39, 2003.