Introduction to the top ten: The West Open-pit Mine has ten of the best in the country or the world, which are: the coal mine with the most visits to the mine by party and state leaders; the earliest coal mine with open-pit joint mining in China; the coal mine after liberation; The earliest coal mine to resume production in the country; the longest mining history; the best quality of mineral coal essence and amber products; the coal mine with the best resource utilization in the world; the largest open-pit mining area and space in Asia; the lowest ground level in mainland China; the largest open-pit mining transportation method in China The largest coal mine in China; the coal mine with the thickest coal seam in China.