The site of the Otake oil refinery, is today called Shunan, a merger of towns inclufing Tokuyama (something common in the last generation in Japan); the spot is about 20 miles SW of MCAS Iwakuni, or about 40 miles SW of Hiroshima.
I believe the refinery was subsequently rebuilt and is still a major employer in the town of Shunan. It should be noted that the Shinkansen station in that town still uses the old city name, Tokuyama.