21. Unlike previous large nitrate film fires, the spontaneous combustion of decomposing film stock was determined to be responsible. 22. Initially established in 1969 to house combustible nitrate films , the archives now house modern acetate films as well. 23. If not stored properly, nitrate film can deteriorate into sludge or dust, or explode and destroy film vaults. 24. In 2001, the Thanhouser Company Film Preservation acquired an original 35 mm nitrate film print from John Conning. 25. Be cautious-that may be nitrate film . 26. It's kind of like the old nitrate films that are rotting away, except those were from 50 years ago. 27. In 1978 in Dawson City, Yukon, a bulldozer uncovered buried reels of nitrate film during excavation of a landfill. 28. The earliest examples are mostly lost to us, victims of volatile nitrate film stock and the economy of forgetfulness. 29. In the late 1940s and 1950s, Warner Bros . destroyed many of its negatives due to nitrate film decomposition. 30. According to the producers the film had a length of around 600 metres, on 35 mm cellulose nitrate film .
