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.
A Pedra da Riqueza (1975)
01/01/1975 (BR) • 16m
Documentary
Overview
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.