Maronas Ltd. has successfully completed the design and implementation of new production facilities and change of the mining technology in the “Vrachanski varovik” deposit. – assigned by Sadas. Ltd. We developed a mixed system using diamond wire cutters and a chainsaw machine. For this purpose, a Fantini 50.81 RATC / P chainsaw was chosen and delivered with a useful cutting length of 3.4m. The new system has achieved an increase in the speed of construction of excavation developments (inclined and horizontal trenches) and a more efficient utilization of the useful volumes in their range.