Espagne (1) Doors (1) Prevention (1) Interviews (1) Identification (1) Shop stewards (1) Working class (1) Interviewing in journalism (1) Industrial safety (1) Industrial hygiene (1) Gaze (1) Concord (1) Business agents (Labor union officials) (1) Interviews (1) Identification (1) Knowledge and learning (1) Research (1) Labor unions (1) Relations (1) Health (1) Effectiveness (1) Salud (1) Identificación (1) Representantes sindicales (1) Funcionarios--Sindicatos (1) Entrevistas (1) Investigación (1) Sindicatos (1) Seguridad industrial (1) Santé (1)