★ 0.0
★ 9.3
★ 3.0
★ 7.0
★ 6.0
★ 6.6
★ 7.7
★ 6.1
★ 3.4
★ 7.3
This animated film dramatizes the danger of working in oxygen-deficient conditions. It was intended for viewing by mine and construction workers in order to promote safety and prevent accidents.
