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Annual Report to the State Public Service Commission 11 OPERATING EXPENSES State hereunder respondent’s operating expenses for the year, classified in accordance with the Uniform Classification of Accounts. Acct. No. Title Amount for year $ 4 Comparison with preceding year $ 4 702. Optu uiiii^ supplies find expense...... 711.2 Boiler labor............ ................... 712.3 Lubricants,------------------------------------ —............................................. 741.2 Purification labor................................................................................................................... 743.1 Maintenance buildings and fixtures............................................................ 743.2 Maintenance equipment.............................•..................................................... 748. Duplicate production charges—Credit....................................... .................................... Total purification expense....------ —----------------------—*--------- ------ 751.2 Storage reservoir, tank and stand pipe labor.............................................. ------ — -----------B B S -------- '------------- :-------------- j -8383^