puits (1) échantillonnage (1) recherche (1) association (1) industrie minière (1) mine (1) analyse (1) famille (1) exploration (1) méthode (1) conflit (1) abords (agglomération) (1) Afrique (1) Discipline (1) Employment (1) Forms (1) Employees (1) Work environment (1) Work (1) Will (1) Stairs (1) South Africa (1) Social groups (1) Sampling (1) Research (1) Regression analysis (1) Weight loss (1) Questionnaires (1) Probabilities (1) Population (1)