三井金属鉱業 みついきんぞくこうぎょう Meanings Noun Mitsui Mining And Smelting Company, Limited Kanji 三 three. Read as み. 井 well 金 money. Read as キン. 属 belong. Read as ゾク. 鉱 ore. Read as コウ. 業 business. Read as ギョウ. Jinuma: Japanese Dictionary · Word lists