Workers work in a Ford automobile engine factory in the United States. Engine blocks on assembly line. Engine blocks being milled. White workers and African American workers assemble engines.
Ship scrapping at a dockyard in the United States. Hull of scrapped ship on a dry dock. Workers cut plating with acetylene torches. Section of plating being lifted with the help of a crane. Piles of beams at a shore.
Training film showing different kinds of rebreather (or Oxygen Breathing Apparatus) used in mine rescues. Models show four types of rebreathers approved by the United States Bureau of Mines- Paul, Gibbs, Fleuss-Davis, and MC CAA. A man points to different parts of the rebreather- such as an oxygen bottle, reducing valve, regenerator, and by-pass valve. Men pump oxygen bottles before using the Oxygen Breathing Apparatus. An oxygen bottle is installed in Oxygen Breathing Apparatus. Men charge the regenerator with chemicals to absorb carbon dioxide from exhaling, places regenerator back to the Oxygen Breathing Apparatus. Man disinfects Oxygen Breathing Apparatus mouthpiece and tubes in a solution of bichloride of mercury or Lysol. Man rinses disinfected tubes with water before installing them back to the apparatus.
A rescue crew explores a mine. Rescue team with Oxygen Breathing Apparatus use elevator to enter the mine. Rescue team explore mine tunnel to search for trapped workers. Rescue team tests a lamp for presence of methane gas. Flame rises inside lamp due to methane gas in mine. Flame goes out in lamp due to lack of oxygen.
Canary in a coal mine and carbon monoxide detector use for rescue operations inside mines. Rescue team uses a carbon monoxide detector and a caged canary bird to detect presence of carbon monoxide. Canary bird in cage expires due to high carbon monoxide.
Thomas A. Edison and his wife, Mrs. Mina Miller Edison, possibly on the grounds of Edison Park in Fort Myers, Florida. The couple walking down path in tropical garden toward a small pool. There is a microphone standing in front of the pool. A man meets Edison and gives him a paper. Mrs. Edison is holding a corsage. The Edisons meet with a group of men including businessman Harvey Samuel Firestone Sr. and his son Harvey Samuel Firestone Jr. A man hands a hat to Thomas Edison. Thomas Edison, possibly Henry Ford, and another man visit a rose garden. Thomas Edison picks a rose in the garden. Thomas Edison and (possibly) Henry Ford both looking at the rose.