八种地下资源可适当开发耐火土：近年来，随着冶炼、烧陶业的发展，高温炉的普及，对耐火土的需要量成倍增长，有供不应求的趋势。建筑石：据城市建筑业预测今年城乡建筑和农村建房将比去年有所增加，对地基石、墙石、碎料石的需求也将增长。红粘土：这种地下资源，不论是... Eight underground resources can be properly developed refractory soil: In recent years, with the development of smelting, burning pottery industry, the popularity of high-temperature furnace, the demand for refractory earth doubled, there is a trend of demand. Building stone: According to the urban construction industry forecast this year, urban and rural construction and rural housing will increase over last year, the demand for foundation stones, wall stones, broken stone will also grow. Red clay: this underground resource, whether it is ...