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A Multi-Criteria Procedure for Selecting Mechanical Excavation Methods. This paper presents the results of a technical and economic analysis of the process of obtaining aggregates by mechanical excavation using hydraulic hammers, vibration rippers, Wirtgen surface miners, and ripper-dozers. The analysis involved a number of machine performance tests carried out at the “Raciszyn” Jurassic limestone deposit. The values determined in the tests included the average performance of individual devices making up the process system, unit fuel consumption and particle size distribution curves. These data served as inputs for the economic analysis of mechanical excavation and aggregate production meth…
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