杜乐天男,1932年生于山东济宁,中共党员,高级工程师(研究员级),博士研究生导师。中国共产党第十三次代表大会代表,部级劳动模范。现任北京铀矿地质研究所科学技术委员会主任、中国矿物岩石地球化学学会常务理事、地球科学认识论方法论研究会会长、《铀矿地质》副主编。他1955年毕业 Du Lok Tian M, born in 1932 in Shandong Jining, member of the Communist Party of China, senior engineer (researcher level), doctoral tutor. Representative of the 13th CPC National Congress, model worker at the ministerial level. Incumbent Beijing Institute of uranium mineral science and Technology Commission director, China mineral geochemistry Society executive director, earth science epistemology methodology research association, “uranium geology” associate editor. He graduated in 1955