In 1922 , he was hired in the Norwegian Ministry of Foreign Affairs .
In 1922 , he was worked there the rest of the interwar period , except for the years 1929 to 1932 when he worked for French mining companies in Addis Abeba , Ethiopia .
In 1922 , he was hired in the Norwegian Ministry of Foreign Affairs , and worked there the rest of the interwar period , except for the years 1929 to 1932 when he worked for French mining companies in Addis Abeba , Ethiopia .