The following zip files contain the structural surfacic model and the volumic grid of the Merlebach coal mine area as described in the paper by Collon et al., 2015. 

You may copy, reuse, modify and redistribute these models for any purpose without limitations, provided that you cite : Collon, P., Steckiewicz-Laurent, W., Pellerin, J., Laurent, G., Caumon, G., Reichart, G., Vaute, L., 2015. 3D geomodelling combining implicit surfaces and Voronoi-based remeshing: A case study in the Lorraine Coal Basin (France). Comput. Geosci. 77, 29–43. and respect the terms of the Creative Commons Attribution 2.0 Generic License.