Cie du Mont-Blanc SA is a ski lift transportation company. It offers transportation service on the mountains by cable and cog railways. The company operates on the municipalities of Chamonix and St. Gervais Vallorcine. It manages three high altitude ski areas in the valley of Chamonix: Les Grands Montets, Balme and BrÃ©vent-FlÃ©gÃ¨re and three excursion sites: Aiguille du Midi, the Montenvers - Mer de Glace and the Tramway Mont-Blanc. The company was founded in 2000 and is headquartered in Chamonix Mont-Blanc, France.