This dataset describes the mining of raw coal. Coal mining processes in China can be divided into two main categories: open-pit mining and underground mining. The specific choice depends on factors such as the geological conditions, thickness, and burial depth of the coal seam. Open-pit mining includes drilling, blasting, loading, crushing, transportation, dumping, pollutant treatment and disposal, and ecological restoration. Underground mining includes tunneling, coal extraction, machinery and equipment, underground and in-plant transportation, ventilation, pollutant treatment and disposal, and ecological restoration and remediation.

Yunnan Province is rich in coal resources and is one of the coal-rich provinces in Southern China. Its coal resources have certain advantages in reserves, types, and occurrence characteristics. The province has large coal reserves and broad distribution. The range of coal types is relatively complete, although coal seams are buried quite deep. Major coalfields and their locations include: Zhenxiong coalfield, Xuanwei coalfield, Eènhong coalfield, Guishan coalfield, Yipinglang coalfield, Xiangyun coalfield, and Huaping coalfield. Coal types mainly include anthracite, coking coal, gas coal, fat coal, lean coal, poor coal, and lignite. The quality of raw coal includes ash content of 6.18~58.85%, volatile matter 7~62.85%, total sulfur 0.13~21%, and carbon content of 62.53~91%. 58%, net calorific value on as-received basis (Qnet,ar) 3295~7334 kcal/kg.