Knowledge material composition coal waste dump is a necessary condition of their subsequent utilizations. Knowledge this fact gives a first prerequisite for possible mining and processing materials of coal waste dumps and their possible use as secondary construction materials. Coal mine dumps are specific geological environment which in its volume is relatively homogeneous. Intensive mining in the Ostrava-Karvina coal district left behind a lot of coal waste dumps. Coal waste dumps composite entirely of gangue material are very numerous (around 46). Heap of Ostrava-Karviná coal district have a specific character resulting from hard coal mining in Upper Silesian Coal Basin. Knowledge of the composition and behaviour of the material from coal waste dumps allow you to select the most optimal utilization of affected areas. Although their number is gradually decreases it is still a large area, which needs to continue to study. The basis for understanding the material composition of these coal waste dumps, there is an analysis of the material and also a schematic cross section of Ostrava-Karviná coal district. The aim of this publication is to analyze the character material.