 Benhima joined Office Cherifien des Phosphates (OCP), Moroccan state-owned phosphate world leader, as a junior field engineer in Khouribga.After the first 6 years he spent there, he became Mining Facilities Manager.He was appointed in 1990 CEO of Casablanca-based Société Marocaine d'Oxygène et d'Acétylène, Moroccan subsidiary of Air Liquide group, world leader in industrial gases.