The mining industry has a huge environmental and social impact in the country/region where is located, consequently its contribution for sustainable development has been widely discussed. Corporate social responsibility (CSR) represents a challenge for this industry, namely, its inclusion as a common management practice integrated in the company´s management control system. For such, it´s imperative that there is a balance between the economic, environmental and social company's concerns. The aim of this article is to study that challenge in a Portuguese subsidiary belonging to a Japanese economic group. The data were collected through interviews and document analysis. The results suggest that CSR practices are not integrated in the management control system, are not part of a long-term environment strategy, and only reflect compliance with Portuguese legislation. It is expected, with this study, to contribute for the literature enrichment about CSR in multinationals companies operating in the extractive industry.