Moisture adsorption and desorption characteristics of some
Coal samples from three major South African coalfields (identified as Waterberg - GG, Witbank 4 seam – WB, and Free State - FS) were used in the investigation. Coals from the GG and WB sources are classified as medium-rank bituminous, while the FS sample was a medium-rank bituminous D coal, as determined by vitrinite random