The era of mining is coming to an end in the Ruhr area. Prosper-Haniel is the last shaft that is still in use and will finally be closed for coal production in 2018. The era of mining is coming to an end in the Ruhr area. Prosper-Haniel is the last shaft that is still in use and will finally be closed for coal production in 2018. The era of mining is coming to an end in the Ruhr area. Prosper-Haniel is the last shaft that is still in use and will finally be closed for coal production in 2018. The era of mining is coming to an end in the Ruhr area. Prosper-Haniel is the last shaft that is still in use and will finally be closed for coal production in 2018.
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