At New Mexico's Empire Zinc mine, Mexican-American workers protest the unsafe work conditions and unequal wages compared to their Anglo counterparts. Ramon Quintero helps organize the strike, but he is shown to be a hypocrite by treating his pregnant wife, Esperanza, with a similar unfairness. When an injunction stops the men from protesting, however, the gender roles are reversed, and women find themselves on the picket lines while the men stay at home.
Is Salt of the Earth on Netflix? Unfortunately the movie Salt of the Earth is not yet available on Netflix.
| Directing | Herbert J. Biberman | Director |
| Production | Paul Jarrico | Producer |
| Production | Jules Schwerin | Associate Producer |
| Editing | Ed Spiegel | Editor |
| Camera | Leonard Stark | Director of Photography |
| Editing | Joan Laird | Editor |
| Camera | Stanley Meredith | Director of Photography |
| Writing | Michael Wilson | Writer |
| Production | Simon Lazarus | Producer |
| Production | Herbert J. Biberman | Producer |
| Sound | Dick Stanton | Sound |
| Sound | Harry Smith | Sound |
| Production | Sonja Dahl Biberman | Associate Producer |
| Production | Jules Schwerin | Production Manager |
| Directing | Jules Schwerin | Assistant Director |
| Sound | Sol Kaplan | Original Music Composer |
