City Mineral: The way to find mineral

What is the city mineral? City mineral is minerals extracted from used objects. For instance, a used bottle. Plastic can extract from the bottle by melting it. The achieved plastic can reuse to make a new bottle. Used cellphone? yes. will get battery, wire, PCB, glass, plastics. City mineral will high-value industry for future or sooner. As we know, mineral resources are limited where buried the earth and it will be going out soon. Have you ever heard that the plastic island wherein pacific? Trash is everywhere, and it makes trouble. People need a plastic cup but the plastic material is alread...