One of the major environmental & operational concerns to ore processing is the management of the generated tailings. Conventional tailings storage facilities usually involve the construction of damns, which has been under pressure from social and regulatory agencies due to recent failures. Thus, the use of less associated damage techniques is recommended.One of the major environmental & operational concerns to ore processing is the management of the generated tailings. Conventional tailings storage facilities usually involve the construction of damns, which has been under pressure from social and regulatory agencies due to recent failures. Thus, the use of less associated damage techniques is recommended. The use of geotextile tubes units is an alternative to dispose ore tailings, once it is possible to dewater high humidity materials and stack the geotextile tubes units for optimization purposes. The use of geotextile tubes in mining involves pumping the tailings inside the geotextile tube unit. Since the geotextile is permeable, it filtrates the tailings by retaining the solid particles, releasing the liquid, and thus confining the tailings particles inside the tube. Draining the water out of the system is the main advantage of this technique because it reduces the geotechnical risks of failure due to piping or liquefaction. Also, the drained water can be reused in the beneficial cycle, which is relevant in places with low water availability. In order to use the geotextile tubes to dewater fine mining tailings, a large-scale prototype was installed at the field to confirm laboratory test results and to adjust the procedure of filling according to the field needs. Considering the importance of tailings disposal area optimization, the geotextile tubes were stacked. The project was designed for a three-level structure, being 9 geotextile tubes units in the first level, 4 in the second level, and one geotextile tube unit in the third level of stacking. Every geotextile tube unit had approximately 2,0m in width, 6,0m in length with a maximum height of 1,0m during filling. Based on field observations, geometry, procedures and check points are recommended to assist the process of filling and stacking the geotextile tubes with the gold ore evaluated in this research. This was possible by combining laboratory tests results with the large-scale prototype installed at the field, aiming at the structure operation & useful life.