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The Sheik continued to administer the island until 1924. The Anglo-Persian Oil Company built their first pipeline terminus oil refinery in Abadan, starting in 1909 and completing it in 1912, with oil flowing by August 1912 (see Abadan Refinery). Refinery throughput numbers rose from 33,000 tons in 1912–1913 to 4,338,000 tons in 1931. By 1938, it was the largest in the world.
