Pictures from Fotolia: 0.0. Water, man, displays, airplane 0.3. men and women in airport 0.5. magazines 0.6. conference hall 1.2. salt mine 1.3. powering through 3.2. Water pollution 4.1. enginner with refinery pipelines concept 4.2. engineers under dramatic sky 5.1. Manhole cover 5.2. cups 5.3. Water pollution, Miners 5.4. Laboratory, scientific experiment 5.5. mining equipment 5.6. a smoking industrial power plant at night 5.7. concrete 5.8. steel mill worker 5.9. Cheese factory, Raspberry and cream