International Journal of Coal Geology 

TL;DR: In this paper, it is shown that the micropores are where most methane adsorption occurs in coal seams, and the methane molecule may actually stretch, minutely, the pore and thus with de-gassing of the reservoir, could result in matrix shrinkage, allowing opening of the fracture (cleat) system in the coal and thus enhancing permeability.

TL;DR: In this paper, the average trace element contents in the World black shales and coals and coal Clarke values are presented, based on comprehensive calculations using very large amount of information (thousands analyses of black shale, coals, and coal ashes for trace elements).

TL;DR: In this paper, a combination of focused ion beam milling and scanning electron microscopy was used to describe the evolution of secondary organic porosity in eight Woodford Shale (Late Devonian-Early Mississippian) samples with mean random vitrinite reflectance values ranging from 0.51% Ro to 6.36% Ro.

TL;DR: In this article, the technical aspects of coal mine methane capture in and from coal mines, the main factors affecting CMM accumulations in underground coal mines and methods for capturing methane using boreholes, specific borehole designs for effective methane capture, aspects of removing methane from abandoned mines and from sealed/active gobs of operating mines, benefits of capturing and controlling CMM for mine safety, and benefits for energy production and greenhouse gas (GHG) reduction.

TL;DR: The background values of trace elements were dominated by sediment source regions in coal-bearing strata in China as mentioned in this paper, and the genetic types for trace-element enrichment of Chinese coals include source-rock- controlled, marine-environment-controlled, hydrothermal-fluid-controlled (including magmatic-, low-temperature-hydrothermalfluid-, and submarine-exhalation-controlled subtypes), groundwater-controlled and volcanic-ash-controlled.