2023 Coal mines licensed
2022 Coal mines licensed
2021 Coal mines licensed
2020 Coal mines licensed
2019 Coal mines licensed
2018 Coal mines licensed
2017 Coal mines licensed
2016 Coal mines licensed
2015 Coal mines licensed
2014 Coal mines licensed
2013 Coal mines licensed
2012 Coal mines licensed
2011 Coal mines licensed
2010 Coal mines licensed
2009 Coal mines licensed
2008 Coal mines licensed