France (1) Département de la Loire (1) Women employees (1) Plumbing fixtures (1) World health (1) Wells (1) Public health (1) Plumbing--Equipment and supplies (1) Mining corporations (1) Mineral industries (1) Industrial hygiene (1) Management (1) Science (1) Sanitary affairs (1) Population (1) Health (1) Effectiveness (1) Aparatos sanitarios (1) Trabajadoras (1) Salud (1) Ciencias (1) Frontière (1) Santé (1) Puits (1) Population (1) Mine (1) Installation sanitaire (1) Gestion (1) Sociétés minières (1) Efficacité (1)