This project, installed in a desert region, aimed to dewater a mining zone by strategically positioning the dewatering wells with a diameter of 14 inches. Technosub worked jointly with a specialised company in hydro-geology to position the needed equipements. A total of 14 submersible pumps of 250 HP were installed in 120 meters deep pits. Those pumps supply two Technojet MH stations for a total of 4 stationary pumps of 600 HP with also 3 others stationary pumps of 700 HP. This project calculates a total of 8000 HP in pumping equipments. This system was dimesioned to pump up to 31 000 USGPM.