ANGOLA

ANGOLA (República Portuguesa, Portuguese colony).

Infrastructures.
Craveiro Lopes [now Biópio] dam.
Airmail. Fifth stamp in a set of 10, issued on 12.07.1965.
Face value: 4.50 Angolan escudos.
Printed by Casa da Moeda, Liaboa.
Printing: Offset lithography.
Print: 1,000,000 copies.
Size: 40 x 28 mm.

Catalogs
- Afinsa-Mundifil No. CA25.
- Michel No. 518.
- Scott No. C30.
- StampWorld No. 531.
- Stanley Gibbons No. 637.
- Yvert et Tellier No. PA20.

The Biópio Dam was completed in 1956 on the course of the Catumbela River, in the Benguela Province, at an elevation of 109 m (357.61 ft) above sea level, and was inaugurated on September 6 of the same year with the name of the Portuguese military and politician Francisco Higino Craveiro Lopes. It is 20 m (65.62 ft) high and 178.5 m (5,856.30 ft) long in a linear gravity structure, in concrete, consisting of seven discharge blocks equipped with hydraulically controlled automatic tilting gates. The dam underwent a rehabilitation process starting in 2009.