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document
De Jong, T.P.R. (author)
In the Netherlands several billion tonnes of mineable coal remained after closure of all mines in 1974. Mining activities in Dutch Limburg were suspended relatively early in comparison to surrounding basins, of which only DSK’s Ruhr mines are still producing. In retrospective this saved the costs of uneconomic exploitation and limited further...
conference paper 2004
document
De Jong, T.P.R. (author), Mesina, M.B. (author), Kuilman, W. (author)
The efficiency with which an electromagnetic sensor array is able to distinguish density and ash content of coal and shale mixtures was determined experimentally. The investigated sensor was originally designed for automatic metal detection and sorting in industrial glass recycle processing, where it is widely applied. In coal preparation, the...
journal article 2003