more at hardware.quickfound.net Public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and equalization (the resulting sound, though not perfect, is far less noisy than the original). US Navy Training Film MN-9223f en.wikipedia.org An oil burner is a heating device which burns fuel oil.
See the article here:
Furnace Boilers: "How Fuel Oil Burners Work" 1956 US Navy Training Film 12min