IOP Conference Series: Materials Science and Engineering PAPER • OPEN ACCESS Coal industry in Czech Republic To cite this article: V Cablik et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 545 012001 View the article online for updates and enhancements. This content was downloaded from IP address 107.175.117.169 on 06/06/2019 at 13:04