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Illegal Dumping of Waste Tires in Tokyo Suburbs - December 1997 In December 1997, approximately 300,000 waste tires were illegally dumped in the suburbs of Hachioji City, Tokyo. About 30,000 of these tires spontaneously combusted, causing a large-scale fire. The black smoke from the fire contained harmful substances such as carbon dioxide and dioxins, raising concerns about air pollution and health hazards. The dumping resulted from improper disposal by a local business. The government spent approximately 60 million yen to recover and properly dispose of the tires. Some were recycled, while the remainder was incinerated. In response to this incident, the Tokyo Metropolitan Government strengthened audits of waste disposal companies, installed surveillance cameras, and introduced a tire recycling promotion system. The incident served as a wake-up call, highlighting the seriousness of waste disposal issues.