A paper, "The Lewis Overthrust," by Burdick appeared in the September issue of the Creation Research Society Quarterly. Field data was reported that had been gathered in recent years from the study of the so-called thrust contact along the visible exposures. The standard physical evidences for thrust or low angle faults are: 1) mylonite or ground-up rock along the upper and nether plates of the natural mill, 2) tectonic breccia, or angular fragments of rock along the contact, and 3) slickensides, or grooves made by the differential movement. In the exposures visited these criteria were missing; therefore the author concluded that the Lewis block may not be a genuine overthrust. In the summer of 1973 geologists Malcolm Fargher and Walter Peters accompanied the field trip sponsored by the Bible-Science Association under the personal direction of Rev. Walter Lang. Fargher reported the existence of slickensides and other physical criteria in the vicinity of the thrust contact, thus perhaps causing a re-evaluation of previous conclusions regarding the Lewis Overthrust. Accordingly a special plane was chartered to fly Fargher and Burdick to the scene in October, 1973. Geoffrey McMahon kindly offered to pilot the plane and, as it turned out pay for a large portion of the expense of the trip.