It was discovered that the diggings preserves 6.99 billion ton coal and 3.2 billion ton pyretic in Gulin and Xuyong.

• 纳溪区腹地煤炭、硫铁矿资源十分丰富，其中古叙矿区探明煤炭储量69亿吨，硫铁矿32亿吨。