[7] Edaphic savannas, small herbaceous clearings on sandy, or loamy to clayey soil, are found beside the channels of the Busira River.

[8] As of 1 January 1894 the Société anonyme belge pour le commerce du Haut-Congo (SAB) had 83 factories and posts, including some in the French territory to the west of the Congo and Ubangi rivers.

A map shows the company had posts along the upper Ruki River at Bilakamba, Bombimba, Bussira Manene, Moniaca, Bocoté and Yolongo.

[9] The Compagnie du Congo pour le Commerce et l'Industrie (CCCI) was given the right to 150,000 hectares (120,000 acres) of land in return for its services in studying the Matadi-Léopoldville Railway project.

The CCCI and CFC lands were mostly grouped into the Bloc de la Busira-Momboyo, created in 1901, along the Busira and Momboyo rivers.

[10] In 1904, in the last months before the concession was taken back by the state, the SAB harvested 50 tons of dry rubber, of which 6 were from Ikelemba, 34 from Busira and 10 from Salonga Lomela.