にっぽんせきたんきょうかい 日本石炭協会 LinksSentence search for 日本石炭協会Sentence search for にっぽんせきたんきょうかいKanji details for 日, 本, 石, 炭, 協 and 会Edit in JMdict Noun1. Japan Coal AssociationOrganization nameOrganization2. Japan Coal Association Discussions Log in to talk about this word.