HUR used drones to strike the refinery, damaging the AVBT-101 atmospheric vacuum tube installation, three diesel fuel tanks, and one oil tank. Russian Telegram channels reported powerful explosions in the Dzerzhinsky district, followed by the distinctive sounds of drones overhead and smoke and fire in the area on May 10. Read also: Drones strike Gazprom oil refinery in Bashkiria – nearly 1,700 km from Ukrainian border Kaluga Governor Vladislav Shapsha later confirmed that a drone crash caused the fire at the plant. According to Shapsha, there were no casualties. First Plant LLC is Kaluga Oblas…