Video shows coating huge water tanks. The Peru Project involved taking water tank sections from the mountain mining locations in South America, bolting pieces together, prepping and spraying to ensure the tanks are leak proof and ready to use. The tanks are then transported back to the mines. These holding tanks used in mining become completely waterproof, weatherproof and chemical resistant and won't peel or chip like paint. You can also view sewer reclamation spraying in Hong Kong.