This commercial scale test, known as the M-1 Project, is located in Crawford County, Illinois. The M-1 Project area encompasses approximately 407 acres of Robinson Sand reservoir; the area covers portions of several waterfloods that were developed on 10-acre spacing in the 1950's and are now approaching their economic limit. This report covers the interim from contract execution, September 30, 1976, through December 31, 1976. Limited additional information and data obtained prior to September 30, 1976, are also included in this first report to add continuity. (DLC)