1975 · 0h 16m · Documentary
Genres: Documentary
The contrast in the extremely rudimentary form of xelite mining and the use of tungsten, obtained from xelite, in the most complex instruments of nuclear technology.
Director: Vladimir Carvalho
Writers: Vladimir Carvalho
Music by: Fernando Cerqueira
Cinematography: Walter Carvalho
Editor: João Ramiro Mello