Intelligent twin-boom electro-hydraulic development drill, brand Sandvik, model DD322i, featuring 58 m² coverage and a 21,500 kg operating weight; equipped with two 20kW RD520 rock drills, SB55i booms, and TFi (12-18 ft) or TFX telescopic feeds. It includes a 100 kW TCD3.6 diesel engine (Tier 3), hydrostatic transmission, and SICA intelligent control system, designed for 3.5×3.5 m drifts with 380V-690V multi-voltage power supply.
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