The Challenge: Identify dam on front of Congo 100-franc note

Today’s challenge is to identify the dam which appears on the front of the old 100-franc note of Congo Democratic Republic.

If you can precisely identify the name and location of this dam—or have a lead which you think might be useful—please post a comment, preferably including a URL which links to evidence supporting your identification.

This dam appears on the front of the 100-franc from 1963 (Pick 1):

IDENTIFIED: Ruzizi I hydroelectric dam on Ruzizi River between Congo and Rwanda.

For extra credit, please supply the precise name of this equipment which appears on the back of this note:

IDENTIFIED: Bucket chain excavator.

Courtesy of Frederick Martin.