COLAS Midi-Méditerranée

The limestone from the Sainte Colombe quarry, located in the Pyrénées-Orientales, has a significant clay fraction and may result in a significant proportion of fines with bad characteristics for construction. The company studied possible solutions to greatly reduce the production of fines. After the installation of new processes and many trials and tests on materials before and after treatment, the system today allows an optimisation of the deposit which ultimately extends the life of the site and reduces environmental impacts.