THE SAND DOLLAR SOLUTION 144 BUENA VISTA P.O. BOX 742 STINSON BEACH, CALIFORNIA 94970 May 20, 1997 My Fellow Medizone International, Inc. Shareholder's, I believe a moment of truth and opportunity is before you. Our Company is in a desperate situation . Current management, led by Joseph Latino for the previous three years, has failed to fund or manage Medizone in a viable manner. At this time, Medizone is financially insolvent . Research is not progressing and three Board members: Larry Sosnow, Richard Solomon, and Howard Feinsand have all resigned in the previous seven months. A fourth, Ken Gropper, has threatened resignation if the resignation or firing of Joseph Latino is not achieved. In our view Medizone is not only dysfunctional, for all practical purposes it is a non-entity. When Joseph Latino became President of Medizone the stock was trading at approximately $0.32 per share. Today it is trading just above $0.05 . The enclosed proxy, which I strongly ask you to support, offers the opportunity to elect four very qualified members to the Board, as well as to approve a financing package that is above current market prices. These changes will allow us to install new and professional management, begin a positive corporate direction and once again advance the science. Milton Adair will lead the new management team and will personally select a new CEO from the applicants we are currently reviewing. Milton brings a 35 year business background in the bio-tech industry. His leadership strengths vary from sales and marketing to product development and FDA relations. Gerard Sunnen, M.D. has been involved with Medizone for over 10 years. He first studied the use of ozone in Germany in 1986. A published ozone researcher, Dr. Sunnen has strong professional ties in Europe. He will be an excellent liaison for Medizone with the Italian researchers, without needing an interpreter. William Hitt, Ph.D., M.D. brings a renowned background to Medizone. A long time member of The World Health Organization, Dr. Hitt is the recipient of the prestigious Eli Lily award for his discovery and report of new anaerobic species of mycoplasma. Additionally, Dr. Hitt received the Leeuwenhoek Award of France, the Cientifico Destacado of Mexico, and the Bioethics International Award of Merit. Dr. Hitt has instructed immunology at both John Hopkins University and Louisiana State University, and brings research and business expertise to the Board as well. The strongest remark I can make about my own qualifications is that I have been able to formulate this plan, form Sand Dollar Solution , a financial arm of this endeavor, and bring these distinguished people together. There is no doubt in my mind we will succeed . We do ask your timely support in order to accomplish this. Richard Solomon, a former Board Member and Director of Medizone New Zealand was asked to join this effort. While he declined to be a candidate for a Board seat at this time, he did pledge his full support to these efforts, and gave us permission to use his name. With his background and knowledge as a Board Member up until February 27 of this year, Richard is well aware of the challenges we face, and will be of vital help to the new management team. As you review the proxy, particularly the section entitled, "Sand Dollar's Complaints Concerning Management ", I believe you will see what grave circumstances the company is in. My personal evaluation is that the Company is currently not in a survivable situation. Please help us change that. I strongly urge you to carefully read the proxy and carefully fill out the proxy card to insure we will be able to count your vote. Your company is at stake. Please follow through with this proxy request immediately. I thank you very much for your support, without which, these efforts would be futile. YOURS TRULY, EDWIN G. MARSHALL , BOARD NOMINEE FOUNDER, MEDIZONE SHAREHOLDER'S GROUP MANAGING AND GENERAL PARTNER, THE SAND DOLLAR SOLUTION , A CALIFORNIA LIMITED PARTNERSHIP www.secinfo.com/dsVSa.812s.htm#hpx