While the oilfields were successfully sabotaged by the Dutch before their surrender, Japanese engineers were able to swiftly restore them to production and 350,000 barrels were extracted each month by early 1944.
Saat ladang minyak Tarakan berhasil disabotase oleh Belanda sebelum penyerahannya, Jepang bisa dengan cepat memperbaikinya agar bisa menghasilkan lagi dan 350.000 barel diproduksi tiap bulan dari awal tahun 1944.