Territorial areas of gravel/sand extraction (ATEg), clay (ATEa), recovery quarries and reserve quarries identified by the Quarries Plan approved by the Region on 16 May 2006 (D.C.R. 16 May 2006 n° VIII/166) prepared on the basis of criteria determined by the Regional Council (D.G.R. 26/02/1999 n. 6/41714). Data type and format Vector data - polygonal shapefile working scale: 1:10,000 coordinate system: Gauss-Boaga (West zone) - Projection Gaussian conformal transverse cylindrical - Reference ellipsoid: international Hayford ellipsoid - Rome '40. geographical coverage: administrative area of the former Province of Milan (North-West X: 1,477,012 Y: 5,065,677 South - East
