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major steps in processing open pit cobblestone mining

Sep 11, 2020 In the case of open-pit mining, these activities are the extraction and processing of the resource. Formulations for solving resource-constrained project scheduling, which is NP-hard in general, have been proposed since the 1960s; see, e.g., Mu oz et al. ( 2018 ) and references therein for an overview of this problem and its applications to ...

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