Report Preface: This supplement is designed to be used with Marketing Research Report No. 719, "Economies of Scale in Turkey Hatcheries." The first part of this supplement describes the 11 basic variable labor inputs in the normal operation of turkey hatcheries. The second part contains layouts of the 6 different size model turkey hatcheries that were developed and described in Marketing Research Report No. 719. The tables provide (1) detailed data on the costs of operating the model hatcheries at 40, 60, 80, and 100 percent of 52- and 34-week capacities, (2) detailed information on the quantity and cost of the equipment and supplies used in the model hatcheries, and (3) the work schedules that would allocate efficiently the labor utilized in pulling the infertile eggs on the eighth or ninth day of the hatching cycle in the model turkey hatcheries. A selected bibliography of studies on the turkey industry, the hatching phase of the poultry industry, and economies of scale, concludes this supplement.