Home›Underground mining›房柱採礦法🌐中文EnglishDeutschFrançaisالعربية中文日本語EntityQ2505150· pop 6· linked from 130 articles房柱採礦法Also known as room and pillarmining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillarsAvailable in 6 languagesFrançaisDeutschالعربيةSerbianUkrainianvia Wikidata sitelinks · CC0ConnectionsrockEntityuraniumEntityCategoriesUnderground mining