This article aims to assess the values of the most often measured petrographic, geochemical
and technological indicators of coal quality and to identify probable dependences between …

Polish bituminous coal basins are associated exclusively with Carboniferous deposits,
differing in origin and geological structure. This paper presents only a short review of papers …

Lead, belonging to the category of toxic heavy metals, poses a major threat to the
environment and the health and life of living organisms. Anthropogenic sources of lead …

Geochemiczne badania karbońskich formacji węglonoœnych Polski mają duże znaczenie
dla poznania przyczyn i miejsc kumulowania się w złożach węgla pierwiastków œladowych …

The average contents of Ag (0.55 ppm) in the researched coal are similar to, and the
contents of Sn (3.30 ppm) and W (13.30 ppm) are higher than their average contents in the …