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1. Engineering Students, West Virginia University

Gyratory Testing Machine built by Engineering Developments Co., Inc.  Vicksburg, Miss.  Model 4C, ser. no. 5. Pat. No. 2972249.

2. Aerospace Engineering Student Using a Gyratory Testing Machine, West Virginia University

'A circular section of the Raleigh County test highway in being removed to be investigated for its durability. The sample resembles the disk which is made in the WVU laboratory.'

3. West Virginia University Air Permeability Test, Raleigh County, W. Va.

'WVU Researcher Byron Ruth tabulates data from samples taken from various roads throughout the state.  Checking the compaction of each disk, Ruth receives samples from test roads in Wetzel, Monongalia, Berkeley, and Raleigh counties.'

4. Byron Ruth Tabulating Data, West Virginia University

'Byron Ruth is pictured mixing asphalt in the civil engineering Laboratory at WVU.  The mix will be tested for road durability by a gyratory machine. In the background, aggregates obtained from all areas of West Virginia are kept in the cylindrical containers.'

5. Dr. Byron Ruth Mixing Asphalt, West Virginia University