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<p>The paper presents generalized net model of a system for tracking and monitoring the movement and actions of a rm's dumpers and crushers. The model permits analysis regarding possible cyber manipulation of data, and highlights the key vulnerabilities of such systems.</p><p>This paper is included in the program of <a href="https://digilience.org">DIGILIENCE 2019</a> and will be published in the post-conference volume.</p>