TELLES TRANSPORT, INC. et al. , Petitioners, v. WORKERS' COMPENSATION APPEALS BOARD and LUIS ZUNIGA, Respondents. OPINION CORNELL, J. Telles Transport, Inc. (Telles) petitions this court by a writ of review challenging the decision of the Workers' Compensation Appeals Board (WCAB or Board). Although the documents were not offered into evidence, Telles apparently had its own copy of the relevant UMC records. The WCAB disagreed with the WCJ and found the WCJ had a duty to develop fully the record by admitting the relevant UMC records. 1 Zuniga maintains the WCAB acted within its authority in ordering the WCJ to admit the previously undisclosed UMC records.

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