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3,026,870 dunams is about 75 times as big as Rock Island
In other words, it's 77.1710 times the size of Rock Island, and the size of Rock Island is 0.012958 times that amount.
(a.k.a. Arsenal Island, a.k.a. Rock Island Arsenal) (Illinois, on the Iowa border) (land area only)
Rock Island measures 39,220 dunams in total area. It is known as the largest government-owned weapons manufacturing arsenal in the United States and the US Army's only active foundry, as well as a former Union prison camp during the American Civil War.
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