Properties and structure of hard coals from the borehole Niedobczyce IG-1 in the Rybnik coal district, Upper Silesian Coal Basin, their petrographic and group constituents. 2. Variations in petrographic composition of the coals along the depth of borehole and alterations in structure of the coals characterised by vitrinite spectroscopic analyses (X-ray, IR) : S. Jasienko, A. Matuszewska & A. John, Fuel Processing Technology, 41(3), 1995, pp 221–232

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 136 KB
• Volume: 32
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(95)99477-f