A survey questionnaire, directed to determining maintenance administrative ratios, was mailed to 3,685 nation-wide companies. Of the 509 responses, 502 were sufficiently complete to use in the study. The survey data are presented in the form of charts and tables, grouping the companies by the type of manufacturing reported. Each data table is prefaced by a discussion of the factors related to the ratio and is followed by a brief analysis of findings. The survey presents a profile of reporting companies (total number of employees, type of manufacturing, mergers and austerity programs). Data are then presented on: the number of total plant employees per maintenance employee, the number of maintenance hourly employees per maintenance supervisor, the number of maintenance hourly employees per maintenance staff planner, how maintenance work is measured, time spent on construction and alterations, length of training program for hourly maintenance personnel, the use of special technicians and industrial engineers in maintenance, the ratio of maintenance hourly employees to special technicians and to industrial engineers, the number of maintenance hourly employees per stores employee, and the number of maintenance hourly employees per maintenance staff employee. (AG)