| Piast coal mine | |
| Place: | Bieruń |
| Subdivision Type: | town |
| State/Province: | Silesian Voivodeship |
| Country: | Poland |
| Owner: | Kompania Węglowa |
| Products: | Coal |
| Amount: | 5,000,000 |
| Opening Year: | 1998 |
The Piast coal mine is a large mine in the south of Poland in Bieruń, Silesian Voivodeship, 310 km south-west of the capital, Warsaw. Piast represents one of the largest coal reserve in Poland having estimated reserves of 150 million tonnes of coal.[1] The annual coal production is around 5 million tonnes.