TY - CPAPER AU - Madiyar Aliakbar AU - Nursulu Tovbassarova AU - Manshuk Sarbopeyeva AU - Zhadyra Suleimenova AU - Madina Ganikhanova TI - EFFECTIVENESS OF TUNGSTEN CARBIDE TOOLS IN PERCUSSIVE-ROTARY DRILLING OF HARD ABRASIVE ROCKS T2 - SWS 2026 Conference Preprints PY - 2026 PB - STEF92 Technology ER -