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Author: Admin | 2025-04-28
The fourth most severe of the ratings.) The 1991 PPL also set up a procedure whereby, if a mine operator had a chest x-ray initially evaluated by a relatively unskilled reader, the operator could seek a reading by a more skilled one; if the latter rated the x-ray below 1/0, the MSHA would delete the "diagnosis" from its files. We explain the multiple-reader rules further in the context of the third PPL, where they took their final form (so far). The second letter, PPL No. P92-III-2 (effective May 6, 1992), superseded the 1991 PPL but largely repeated its view about a Part 50 diagnosis. In addition, the May 1992 PPL stated the MHSA's position that mere diagnosis of an occupational disease or illness within the meaning of Part 50 did not automatically entitle a miner to benefits for disability or impairment under a workers' compensation scheme. The PPL also said that the MSHA did not intend for an operator's mandatory reporting of an x-ray reading to be equated with an admission of liability for the reported disease. The final PPL under dispute, PPL No. P92-III-2 (effective August 1, 1992), replaced the May 1992 PPL and again restated the MSHA's basic view that a chest x-ray rating above 1/0 on the ILO scale constituted a "diagnosis" of silicosis or some other pneumoconiosis. The August 1992 PPL also modified the MSHA's position on additional readings. Specifically, when the first reader is not a "B" reader (i.e., one certified by the National Institute
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