An explosion and fire at a fuel depot owned by energy major Eni near Florence, Italy, killed on Monday morning at least two people and injured another nine, while three people are still unaccounted for. At least three of the injured are in critical condition, Italian officials say. The fuel depot at Calenzano, just northwest of Florence, receives, stores, and ships out gasoline, diesel, and jet fuel. The explosion occurred in an area where trucks were refueling in a loading shelter. The explosion and fire have not affected the storage tanks, Eni…