 Although administered separately, in the ISO 3166-1 standard Jan Mayen and Svalbard are collectively designated as "Svalbard and Jan Mayen", with the two-letter country code "SJ".The island and the circa 1960s NATO base is frequently referenced in the Kathryn Bigelow film, "".Jan Mayen Island has one exploitable natural resource, gravel, from the site at Trongskaret.