In the 2020 Tokyo Olympics and Paralympic Games, the organizing committee of the Japan has not advanced to recycle rare metals such as gold and silver collected from "urban mines", and to try to reuse gold, silver, and copper medals in the beginning of April. The recycling of these rare metals is not the beginning of the moment. In 13 years, the "small Household Appliance Recycling law" for used electronic devices has been enforced, and the recovery rate has been less than 10% in the 15th fiscal year due to the lack of recovery obligations of each used product.
What is the current status of 100% of urban mines as a trigger for re-use of medals? -Urban mine and urban mine, smartphone, gala, it products and small appliances such as game consoles and rare metal (rare metals) and precious metals are included. The concept of a mine that is buried in a city is considered as a resource that can be mined for those used products. The waste electricity and electronic equipment discharged from the urban areas are recycled to remove precious metals and rare metals from it, but Michio Nanjo (professor at the time of the Tohoku University Institute of Smelting and Refining) was advocated in 1980. There is also momentum such as the "gold standard" in the slump of the stock price, and the re-use to the medal of the Tokyo Olympic and Paralympic Games, and the price of precious metals such as gold rises and is attracting attention again. In an estimate of the material and Materials research organization, the Japan city mines have a gold of 1800 ton and 16% of the world's reserves, and about 22% of the silver has slept at 60,000 million ton. Both gold and silver are the world's largest reserves. By the way, copper is the second largest in 3800 ton. Each reaches the amount that can be adequately supplied for about three years for the demand of the world. Other Lithium 7 years, platinum 5 years, rare earth two years can be supplied well. In view of the City mine reserves, Japan is one of the world's most hidden resource countries. However, the left state remains unused. As a resource small and Japan, emissions are one of the most thought-out propositions of the world's top-class food loss.
