[8] Arthur focused on designing machinery to create sound effects, while Ora served as supervisor of the department,[9] the first woman to fill such a role.
[3][10] According to sound effects expert Robert L. Mott,[11] Ora Nichols quickly came to be one of the most influential women in radio content and style, ranking with Kate Smith, Amelia Earhart, and Eleanor Roosevelt.
[13] Leonard Maltin quotes the article as saying: "I investigated and discovered that Ora Nichols is the most important of any one on that list... She is head of Columbia's sound department.
[15] In 1935, Ora Nichols decided that she no longer wanted the administrative responsibilities of running the department, so CBS hired Walter Pierson to take over from her, and she returned to full-time work creating sound effects.
[10][16] Al Van Brackel, Max Uhlig, Vic Rubei, Ray Kremer, and Jim Rogan were hired as additional assistants.
[3][19] With airtime rapidly approaching for the live broadcast, Welles quickly apologized, and subsequently wrote Nichols a note saying: "Dearest Ora: Thanks for the best job anybody could ever do for anybody.
"[20][21] Among the techniques that Ora Nichols invented are the use of an egg beater next to the microphone to mimic a lawnmower, chopping a cabbage into a wicker basket to sound like decapitation, and twisting a cast iron pan lid to evoke the door of an alien spaceship opening.