ðɪ ˈaɪɚn plˈeɪts wɜː bˈoʊltᵻd tə ðɪ aʊtsˈaɪd jˈuːzɪŋ bˈoʊlts ðæt ɹˈæn θɹuː tə ðɪ ɪntˈɪɹiɚɹ ˈaɪɚn "skˈɪn".
The  iron plates were bolted to the outside using bolts that ran through to the interior iron "skin".