The records of the Dayrock Mining Company span the years 1923 to 1953, with the bulk of the material covering the years 1923 to 1947. Included are minutes of meetings, financial statements, correspondence with suppliers and stockholders, annual statements and reports to state agencies, stock ledgers and journals, assessment records, lists of stockholders, financial ledgers and journals, voucher registers, ore settlement records, mill reports, payroll and other personnel records, and tax returns.

Related materials can be found in the records of Strattons Mining Company.