The quarry in Bagnac-sur-Célé is celebrating its 100th anniversary in 2013. French construction group Colas took over the quarry in 1980 with the creation of the Société des Carrières du Massif Centrale (SCMC), which employs a dozen staff and produces 250,000 tonnes of hard rock per year for turnover of €3.80 million that are destined for the concrete industry, road or railway construction works, artisans, individuals, and building material traders. Some €1.4 million of investments have been spent over thre