Tribunal Regional do Trabalho da 4ª Região (TRT4)
The Memorial of the Tribunal Regional do Trabalho da 4ª Região provides an AtoM database for public access to its labour-court archive. The associated collection page describes proceedings dating from the establishment of the first conciliation and judgement boards in the 1930s and directs researchers to the AtoM service. The underlying holdings include paper, microfilm and some digital material from courts across Rio Grande do Sul, with collection descriptions organised by their court of origin and date range. The page presents AtoM as the research database but does not identify a predecessor catalogue or data-transfer method. This is therefore classified as adoption rather than migration.