ろてんぼたんこう 露天掘り炭鉱 LinksSentence search for 露天掘り炭鉱Sentence search for ろてんぼりたんこうSentence search for 露天掘炭鉱Kanji details for 露, 天, 掘, 炭 and 鉱Edit in JMdict Noun1. open-pit coal mine; open-cut coal mineOther forms露天掘炭鉱 【ろてんぼりたんこう】 Discussions Log in to talk about this word.