I, DUNCAN R. WILLIAMS, residing at 3316 Martha Circle Drive, Pasadena, California, make the following statements regarding my academic training, professional experience, and present activities.

1. Bachelor of Arts in Chemistry and Mathematics in 1926 from Whittier College; post-graduate courses in Geology and Mineralogy at the University of Wyoming in 1931-33.

2. My professional work has included being a control chemist for Monolith Portland Cement Company, and the Assistant Chief Chemist for that company from 1926 to March of 1928.

     Prior to March, 1928, F.L. Smidth & Co. had located and reported on available cement raw materials in the Laramie area, including what is now Midwest's Niobrara and Forelle deposits. After such survey, Midwest's cement plant was built to utilize such deposits. In March, 1928, I was employed as the Chief Chemist for the Monolith Portland Midwest Company at Laramie, Wyoming. At the time, the Laramie cement plant was under construction, I was assigned to do preliminary prospect and development work on the Niobrara deposit for the raw materials to be used in the plant that was being built. The purpose of the work was to locate the most economical portion of the deposit. This work included the sampling of the deposit and making analytical surveys of the chemical content of the raw materials, and the tabulation of the suitable raw materials that were available.

     One of my duties as Chief Chemist in the period 1928-1948 was the responsibility for the production of raw materials and their processing into cement by appropriate controlled procedures. This involved daily inspections of the quarry operations. In 1937-1938 I supervised the revaluation of the Forelle deposit and the opening of the Forelle quarry.

     In 1942, F.J. Anderson and I invented (and patented) a lime-soda-sinter process to extract alumina from domestic aluminous materials. Thereafter, I presented the process to the National Academy of Sciences, which approved it. In 1943 the Defense Plant Corporation contracted with Midwest to design and construct an alumina plant adjacent to the cement plant and operate it. The plant was constructed in the period 1943-1946 as part of the World War II national aluminum program. In the period 1942-1946, in addition to my regular duties as Chief Chemist of the cement plant, I developed the control procedures for the Government alumina plant then being constructed and participated in the design of the flow sheet and equipment and its construction to specifications. One of my most important duties in connection with the alumina program was the responsibility for locating and acquiring the substantial deposits of anorthosite and limestone (97+%CaCO3) raw materials needed.

    During the period of development of the process and the design and construction of the alumina plant, I travelled to various locations in the United States in order to survey other deposits of raw materials suitable for use in a combination cement-alumina plant.

     In 1948, I was promoted from Chief Chemist to Assistant Superintendant of the Laramie plant. In such position I was responsible for the operation of the plant.

     In 1953, I became Superintendent of the Laramie plant. In 1958, I was named General Superintendent of the Monolith Portland Cement Company and General Superintendent of the Monolith Portland Midwest Company with headquarters in Los Angeles, California. I have held this position ever since.

3. During my professional work, I have been a member of various professional, scientific and technical groups such as the American Concrete Institute, The American Chemical Society, and the American Institute of Mining, Metallurgical and Petroleum Engineers. I am a member of the C-1 (cement) committee of the American Society for Testing Materials and a member of the research committee of the Portland Cement Association.

4. During my 35 years in the cement industry, I have read widely in the technical and scholarly journals, not only of the cement industry, but broadly in the entire field of mining and quarrying, processing, industrial materials, and industrial plant equipment and design.

5. In 1957, I was appointed to the Wyoming Board of Mines by Governor Simpson. The function of the Board of Mines is to make studies and recommendations to the Governor on all phases of mining operations in the state, including the enforcement and amendment of the State Mining Code. During my term of office, regular meetings were held at Cheyenne, and special meetings were held to consider specific problems as they arose at the mine site. The Board of Mines also coordinated its activities with the Wyoming Board of Natural Resources. In the course of my duties, I travelled through the State and visited many operating mines.

6. Midwest has been an active member of the Wyoming Mining Association for many years. In about 1955, I became Midwest's representative to the Association.

7. Midwest has always used solid mineral fuel - mainly coal - for kiln operations. Several years after the Laramie plant was in full operation, the variations in purchased coal, even within specifications, prevented utilization of maximum kiln capacity, so Midwest acquired its own coal deposit near Hanna, Wyoming, a distance of 90 miles northeast of Laramie, just off the Union Pacific main line. I visited the coal mine every two weeks or so as part of my duties of maintaining quality control and continuity of all raw materials, and to lay out operational procedures.

8. During the course of my work, I have written technical papers and articles dealing with the handling and processing of limestone and other materials into alumina and portland cement. Such papers have been presented to the American Institute of Mining, Metallurgical and Petroleum Engineers, and to the Academy of Sciences. For example, my paper on CO2 gas as a cement slurry thinner was published by the Institute, and commented upon by Pit and Quarry.

9. In 1936, the Bureau of Reclamation and representatives of the cement industry held a symposium in Denver to discuss the need for low alkali cements and the need fo a new type low-alumina cement. I represented the Monolith Companies. Later, I directed and participated in Midwest's program which culminated in Midwest's production and sale of its low alkali cements and its low-alumina cement - subsequently called type V.

10. I am the inventor, or co-inventor of a number of United States and foreign patents relating to the lime-soda-sinter process for producing alumina and portland cement from native raw materials, including limestone, and slurry thinners for use in cement plants.

11. In 1957, Midwest constructed its own semi-commercial plant at Laramie for the production of alumina and sodium aluminate from anorthosite and limestone by my patented process (with a by-product residue used for cement). I designed the flow sheet and layout as well as the construction of such plant, and supervised its operations.

12. During the course of my work, I have had the occasion to visit and inspect many cement plants and quarries in all parts of the United States, both individually and as a member of the general technical committee of the Portland Cement Association. For many years, I have read and studied articles in trade journals and other publications relating to American and foreign cement plants.

13. I have had the occasion to visit and inspect all of the major operating stone (including limestone) quarries in Wyoming, and many of the Colorado aggregate plants and coal mines.

14. I have been interested in and collected rocks since I was a boy. About eight years ago, I became a real "rock-hound" and acquired the necessary equipment in my home workshop for cutting and polishing rocks and stone. A good portion of the rocks I worked with was made into hand-made jewelry. Working with the many different Wyoming minerals with my own hands, identifying them, and personally observing their physical properties and characteristic has broadened my interest in the commercial quarrying and use of mineral deposits.