The collapse of abandoned room-and-pillar mines is often violent and unpredictable. Safety concerns often resulted in mine closures with no post-mining stability evaluations. As a result, large amounts of land resources over room-and-pillar mines are wasted. This paper attempts to establish an understanding of the long-term stability issues of goafs (abandoned mines). Considering progressive pi...

Coal dust explosions in underground coal mines are pre­ vented by a generous application of rock dust (usually lime­ stone). If an explosion should occur, the rock dust disperses, mixes with the coal dust and prevents fl ame propagation by acting as a thermal inhibitor or heat sink. To investigate this process in more detail, a number of ex­ plosion experiments using various coal dust and limes...

As a tool for exploration of concealed coal seams by modern techniques, determination of the depth of erosion of coal seams with reference to the surface of angular unconformity underlying the remnants of a key bed is conducted for the first time in coal mines of Kerman region. The angular unconformity surface (the initial surface exposure of coal seams) separates the coal seams of Jurassic age...

The state of North Rhine-Westphalia (NRW) is vital to the success of Germany’s energy transition, as it is the traditional center of Germany’s manufacturing and energy-intensive industries, such as metal production, basic chemicals, non-ferrous metals and paper. NRW’s long history and high concentration of energy-intensive industry operations is mainly due to the proximity of black coal and lig...

Geographic pattern of lung cancer mortality in Fukuoka Prefecture showed elevated mortalities among males in the Chikuho district where many coal-mines had long been operated as one of the biggest coal-mining areas in Japan. The analysis in relations of occupations to lung cancer mortality revealed that consistently significant correlations exist between lung cancer mortality, and mining and qu...

Extensive surveys carried out in Europe and America have shown the incidence of coalworkers' pneumoconiosis to be widespread (Flinn, Seifert, Brinton, Jones, and Franks, 1941; Fletcher, 1955). In India, however, the prevalence of this disease has never been investigated, and a report published by the government of India in 1946 (Deshpande, 1946) stated that there was no conclusive evidence that...

Since 1929, when compensation for silicosis first became payable to men in the coal mining industry, the number of disablement cases has increased rapidly, and there has been greater mortality from respiratory disease among coal miners in South Wales than elsewhere in Great Britain. In 1936 the Medical Research Council were asked by the Home Office and the Mines department to investigate the pr...

Hodnotenie nebezpečnosti banských plynov v uzavretej čiernouhoľnej bani „Niwka-Modrzejów” Closing of hard coal mines, especially stopping the process of mine water pumping, results in a reconstruction of the Carboniferous water-bearing horizon, leading to the intensification of gas flux to the near-surface zone („piston effect”). Stopping the fans considerably enhances the movement of mine gase...

This paper analyzes the composition of the pit coal in Petrila, Romania in order to determine the possibilities of ensuring medium and long-term stable sources of energy to supply power plants using solid fuel. If we observe the distribution of coal deposits in Romania, we can conclude that they are spread over the entire territory, which means that everything is under control in what coal rese...