Abstract
The article examines the distinction between incomplete expert examination and unsubstantiated conclusions in forensic mining engineering examination. It argues that these are related but not identical procedural and methodological phenomena. Incompleteness reflects insufficient coverage of the object, the event, or the factual basis of the examination, whereas unsubstantiatedness concerns deficiencies in the logical and cognitive construction of the path from the available materials to the conclusion. The study demonstrates the functional relationship between these phenomena and identifies the point at which incompleteness may transform into unsubstantiatedness, namely when uncertainty caused by gaps in relevant data is presented as completed knowledge and the limits of reconstruction are not explicitly stated.The authors propose distinguishing procedurally conditioned incompleteness from incompleteness resulting from methodological errors by the expert. Typical forms of incompleteness include an insufficient factual basis, flaws in the formulation of the task, incomplete subject-related analysis, and chronological or causal gaps in reconstructing theevent. The forms of unsubstantiatedness are systematized as excessive definiteness despite insufficient data, factual inconsistencies, logical discontinuities, methodological inadequacy, and conclusions that go beyond specialized knowledge. The methodological framework of thestudy is a structured phase-and-module reconstruction combined with a cause-and-effect tree, which ensures comprehensive incident coverage and a transparent transition from materials to expert judgment. The novelty lies in the operational distinction between incompleteness andunfoundedness, as well as in the combination of the criteria of reliability, transparency, and suitability for verification with an industry-oriented approach to assessing the conclusion in forensic mining expertise.
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