execution of 24 exploratory drillings , including 8 that can be transformed into exploitation drillings in the Wilaya of Hodh Charguien, a single lot: LOT N°2: (2 drillings in Néma, 2 drillings in Djiguenni, 2 drillings in Timbédra, 1 drilling in Amourj and 1 drilling in Adel Bagrou)