Henry Wellington Wack, The story of the Congo Free State (1905)
“ Whoever shall discover a mine in the regions where he is authorised to make researches in conformity with Article 3, can obtain a right of preference for ten years for the concession of this mine, on condition that he complies with the regulations laid down in the present Decree.All mining concessions are limited to a term of ninety-nine years. On its expiration the State succeeds to the property as it stands. A system of royalties on the product of the mine is stipulated in all concessions. ”
