Reconnaissance for uranium in the Cuzco-Ayaviri region, southern Peru /

"October 1957."

Reconnaissance for uranium in the Olmos District, northern Peru /

In cooperation with the Junta de Control de Energía Atómica del Peru.

Reconnaissance for uranium in the Huallanca District, Dos de Mayo Province, Department of Huanuco, Peru /

In cooperation with the Junta de Control de Energía Atómica del Peru.

Reconnaissance for uranium in the provinces of Ayabaca and Huancabamba, Department of Piura, Peru /

"September 1957."

Reconnaissance for uranium in the Moquegua-Ilo area, Department of Moquegua, Peru /

"February 1958."