About the author. ROBERT S. BOYNTON has been intimately involved with lime and limestone most of his business life as Executive Director of the National Lime Association for 32 years. He has served as Chairman of the Association's Technical Committee, and as Secretary, Committee C-7 on lime of the ASTM (American Society of Testing Materials). Mr. Boynton was an investigator in the organization of the International Lime Association, and he has travelled extensively in Europe on investigations. During World War II, he served a stint in the Chemicals Bureau, War Production Board, as commodity specialist of lime and a few other inorganic chemicals, presiding over Lime Industry Advisory Committee Meetings. Since his retirement in 1978, he has utilized his far-ranging knowledge of the industry's technology and markets as a consultant.