Until 1968; the loans were primarily to be used for the construction of infrastructure works, such as seaports, highway systems, and power plants, which would produce enough income to assist a borrower country in repaying its loan.
Hadi 1968; mikopo hiyo kimsingi ilipaswa kutumika kwa ajili ya ujenzi wa miundombinu, kama vile bandari, mifumo ya barabara kuu, na mitambo ya kuzalisha umeme, ambayo ingezalisha mapato ya kutosha kusaidia nchi iliyokopa katika kurejesha mkopo wake.