Document X0jBOgmndq1jq8beMvEEoYMK

ption, lack of exercise, increased sucrose and decreased vegetable fiber inCake.s, may enhance Che ratio of zinc to copper absorbed from the gut. Tills may be a mechanism for their hypercholas t:ero 1 amic e i" ect.. In ruminants, where both copper deficiencies and toxicities are problems in various parte of the viorlld. several advances were reported. N. F. Settle (Moredun Research Institute. Edinburgh) described a depletion - repletion technique, applicable to mature sheep, for assessing availability of dietary copper sources. Using this technique. Subtle demonstrated that the classical copper - molybdenum. sulfur interrelationships arc of greater magnitude than heretofore thought at levels of these elements normally en countered in sheep rations, and that the site of this interaction is at the gut rather than at the ivissue level. A. G. Spais (University of Thessaloniki) re ported that dietary cyanide decreased, and that dietary thiocyanate enhanced copper storage in lambs. G. Weiner (Animal Brooding Research Organisation* Edinburgh) found significant differences among several breeds of sheep in whole blood copper levels. Some, but not all, of these were associated with hemoglobin type. Proceedings, will full manuscripts of invited papers and extended manuscripts of contributions, will be published by Univ. Park Press, Baltimore, Kd. U. S. A. Contact Dr. J,, W. Subtle, Dept, of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706, U.S.A. for information on proceedings. TEl'lA 3 will be held in 1977, probably at a location in Europe. A newsletter to give tentative plans is expected in about 6 months. ^ (kts. sThe Environmental Defense Fund, unlike SEGH,is action oriented and one expects it to take advocacy positions on a variety of issues including trace substances and health. The purpose, of quoting below from one of their recent reports is to solicit letters to the editor of INTERFACE based on the informed opinion of SEGH members on the two issues below: 1. "As a result of successful EDF litigation, the Environmental Protection Agency (EPA) issued emission standards on April 6 for asbestos, mercury and beryl lium. The standards do not, however, provide adequate regulation of these sub stances. For example, asbestos emitted from mines, mills and construction sites is not regulated .because EPA maintains that the Occupational Safety and Health Administration and other Federal agencies should regulate such emissions. EDF main tains that although safety measures taken by such agencies may protect.: workers, people living near asbestos operations are net protected. EDF filed suit on Kay 7 to force ERA to review the asbestos, mercury and beryllium standards." (EDF Letter, Kay, 1973, p 3) SHOULD ERA REGULATE INDUSTRIAL EMISSIONS OF ASBESTOS, Ug AND Be TO CONTROL "HALO" OR NEIGHBOR PROBLEMS? 2. "Since October 1969, EDF has been 'involved in regulatory proceedings and litigation in California against leaded gasoline. Lead released into the atmos phere damages the health of many Americans. Cars burning leaded gasoline cause 90% of this pollution." (EDF Letter, May 1973, P 3) N3F-RANN TRACE CONTAMINANTS ABSTRACTS. Oak Ridge Hat1.1 Lab Series 0RNL-321S-73-60. We have received Vol No. 1 (June 1973) of this series, which will be an account of work sponsored by the NSF-KANN Environmental Aspects of Trace Contaminants Program as prepared by the Toxic Materials Informa tion Center, Env.i.ronmr.tal Infotr-Xilon Systems Office, at Oak Ridge, TN. IS THERE EVIDENCE. TO SUPPORT TITS STATEMENT HAT, "LEAD EMITTER INTO THE ATMOSPHERE DAMAGES THE HEALTH OF MANY AMERICANS" OR IS THIS AN UNDERSTANDABLY CAUTIOUS EXTRAPOLATION FROM THE ESTABLISH ED EFFECTS OF HIGHER DOSE NATESV Please reply by Oct. 15 for considera tion of your letter for publication in the Fall issue of INT11;!'ACE.