It is expected that industrial heritage actually tells the story of the emerging capitalism highlighting the dynamic social relationship between the "workers" and the owners of the "production means". In current times of economic crisis, it may even involve a painful past with lost social, civil, gender and/or class struggles, a depressing present with abandoned, fragmented, degraded landscapes and ravaged factories, and a hopeless future for the former workers of the local (not only) society; or just a conquerable ground for controversial investments. This is certainly an emotionally charged subject matter, with multiple readings and interpretations. However, this view is only partial when facing landscape during its historical evolution process. A diachronic study, thus, embraces all resources that probably gave rise to a variety of human activities; all of them embody heritage values-"subjectively" or "objectively" perceived their evaluation, though, is a matter of an ongoing process of the civil society.