This material is shot in colour.
Location Unknown / Unclear.
Close up shot of face of a man wearing gas mask. Man having his eyes examined after gas mask test. More shots of the people testing gas masks and their eyes being examined. Various shots of the men in uniforms and army boots walking along path covered in stones - presumably testing boots. Close up shot of gas valve with gas pouring out. Men in protective army clothing walking below. Men walking through mud, crawling under barbed wire, walking up and down steps and along path covered in large stones. Officers checking the clothes and boots and writing data.
Date found in the old record - 13/06/1969.