Petrographic and geochemical studies of hard coal and coal tailings from the "Janina" coal-mine in Libiąż

by Święch, Fabian
Source: 1. Mineralia Slovaca 1. 0369-2086 1. Roč. 36, č. 1 (2004)
2. [Príl.] Geovestník 2. 0369-2086 2. Č. 1 (2004), s. 17-18

Mechanization of operation when locating barren rock in underground working of mines

by Dolipski, Marian, Jaszczuk, Marek, Sobota, Piotr
Source: 1. 5th Conference on environment and mineral processing, part I 1. Ostrava : Vysoká škola báňská - Technická univerzita, 2000 1. 8070787651 1. S. 35-38