The Spontaneous combustion problem poses a significant threat to the coal waste dumps
after reclamation. Spontaneous combustion alters the soil environment and further affects …

The study presents research on the unusual appearance of purple-colored organic minerals,
ravatite (phenanthrene) and freitalite (anthracene), occurring in the migrating front wall of a …

In this study, the South African partially oxidized fine-coal reject (FCR), which is associated
with human health and environmental problems and sustains high disposal expenses, was …

Natural and human-induced toxic elements can accumulate in the environment, posing
significant risks to human health and ecosystems. This study explores cave bat guano, an …

Aerosol particles with diameters larger than 40 nm were collected during the flight campaign
StratoClim 2017 within the Asian tropopause aerosol layer (ATAL) of the 2017 monsoon …

In the extreme setting of burning coal-waste dumps in the Upper Silesian Coal Basin in
Poland, botryoidal and spherulitic hematite occurs in association with sulphates and …

Frequent spontaneous combustion activities restrict ecological restoration of coal waste
dumps after reclamation. Effective monitoring of vegetation restoration is important for …

Fine coal reject samples (FCRs) derived from the South African (SA) feed-coal preparation
are unsuitable for gasification/combustion. In this novel investigation, two SA FCRs were …

Underground hard coal mining activity in southern Poland has lasted more than 200 years.
Among many factors related to mining and influencing the natural environment, the longest …

Bismuth sulfide (Bi2S3) nanostructures have gained significant attention in the fields of
catalysis, optoelectronics, and biomedicine due to their unique physicochemical properties …