Bruce had now fixed his main hopes on the discovery of oil, but scientific expeditions in 1919 and 1920 failed to provide evidence of its presence, although substantial new deposits of coal and iron ore were discovered.
ブルースは石油を発見することを大いに期待したが、1919年と1920年の科学調査ではその存在を確定できず、新しく石炭と鉄鉱石の鉱脈が発見されたに留まった。