Machine laying railway tracks. Close up of machine operators hands using the controls. A sharp spike of metal spears the ground. Camera watches the machine move away from it down the line. A woman picking cotton is seen from above. A cotton picking machine. A huge industrial plant. A man in a large room walled with tape decks loads a tape onto one of the machines. Three men in white overalls look down into a deep metal shaft filled with water. A man ploughs a field with a mule. Busy city streets. A mechanic changes a tire. A man takes an order at a fast food joint. A young boy carrying a child on his shoulders walks behind a row of shacks. Children on a porch. A man and woman outside a home laugh. Older african american men sit on a porch talking. A family sit outside their home.