nocoal-kushiro.jp

https://nocoal-kushiro.jp/%e4%bc%9a%e5%a0%b121%e5%8f%b7%e9%87%a7%e8%b7%af%e7%81%ab%e5%8a%9b%e7%99%ba%e9%9b%bb%e6%89%80%e3%81%af%e5%ae%89%e5%ae%9a%e7%a8%bc%e5%83%8d%e3%81%8b/.https:/nocoal-kushiro.jp/%e4%bc%9a%e5%a0%b121%e5%8f%b7%e9%87%a7%e8%b7%af%e7%81%ab%e5%8a%9b%e7%99%ba%e9%9b%bb%e6%89%80%e3%81%af%e5%ae%89%e5%ae%9a%e7%a8%bc%e5%83%8d%e3%81%8b/

Wikipedia: Kushiro Coal Mine