Quarries, sand pits, gravel pits, dredging, debris utilisation, coal, mines, ores, plaster, cement, ceramics, enamel, glass,... …

Some references

MEAC – OMYA – SIFRACO – LAFARGE – CDF – KPCL – FERRO - CLARIANACAL – CARMEUSE – OMG – GERLAND – PICA – CHARBONNAGES DU MAROC - VICAT…