@ARTICLE{Hycnar_Elżbieta_Geological_2018,
 author={Hycnar, Elżbieta and Jończyk, Marek Waldemar and Ratajczak, Tadeusz},
 number={Nr 106},
 journal={Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk},
 pages={39-52},
 address={More info at Journal site: https://min-pan.krakow.pl/wydawnictwo/czasopisma/zeszyty-naukowe-instytutu-surowcami-mineralnymi-i-energia-pan/ https://min-pan.krakow.pl/wydawnictwo/wp-content/uploads/sites/4/2018/02/Wskazowki-ZN-ang-2018.pdf},
 howpublished={online},
 year={2018},
 publisher={Instytut Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk},
 abstract={The Tertiary lignite formations in the Bełchatów deposit, along with coal, are built of plastic, weakly compact and loose rocks. Their physical and mechanical parameters, don’t pose operational problems. However, varieties of a different lithological character and physical-mechanical properties rocks, causing difficulties when mining the overburden rocks, appear within them. These include: Mesozoic limestones, Tertiary sandstones and conglomerates, as well as Quaternary iron feldspar rocks. The article features a lithological characterization as well as values of basic physico-mechanical parameters. They form the basis of the geological engineering classification and decide about their difficult workability. The possibilities of their raw material utilization were also discussed.},
 type={Artykuły / Articles},
 title={Geological and engineering classification and the possibilities of raw material utilization of hardly workable rocks from the Bełchatów lignite deposit},
 URL={http://ochroma.man.poznan.pl/Content/108549/PDF/Hycnar-i-inni.pdf},
 doi={10.24425/124394},
 keywords={accompanying minerals, hardly workable rocks, raw material usefulness, Bełchatów field},
}