Novick L F, Rice C, Freedman M A, Jillson D
Am J Public Health. 1981 Jul;71(7):744-6. doi: 10.2105/ajph.71.7.744.
Materials containing asbestos were found in 75 per cent of 336 Vermont Schools constructed or renovated between 1946 and 1974, with two-fifths of the materials in student exposure areas. Findings from visits to all schools contrasted with an earlier investigation relying on self-reporting. Of 105 schools with student exposure disclosed by the current survey, only eight had been identified in the earlier effort. Ceiling tiles, previously not believed to contain substantial asbestos material, constituted a source of student exposure in 36 schools.
在1946年至1974年间建造或翻新的336所佛蒙特州学校中,75%被发现含有含石棉材料,其中五分之二的材料位于学生接触区域。对所有学校的走访结果与早期基于自我报告的调查形成对比。在本次调查发现有学生接触含石棉材料的105所学校中,早期调查仅识别出了8所。天花板瓷砖此前被认为不含大量石棉材料,但在36所学校中却是学生接触石棉的一个来源。