the book has been put together very thoughtfully and carefully and i'm sure your readers will appreciate the tremendous amount of effort you and your colleagues have put forth to conduct these careful studies over many years. -- brues boecker. lovelace respiratory research institute. u.s.a. in this monograph, the results of 1158 measurements of exhaled thoron activity, about 10422 measurements of four peripheral blood and five hepatic function parameters, 1158 measurements of lung function test and x-ray radiograph on the miners were reported. --tiecheng fu. china institute for radiation protection. china. thank you for forwarding me your paper on the long term health effects of exposure to th and sio2. i found the paper interesting. it is a land mark study. －rogar o. mcclellan. toxicology and human health risk analysis. u.s.a this series of investigations, which began in the mid-1970s, culminated in the first report showing that lung cancer can be induced in humans by inhalation of natural thorium dioxide in mine dust. --david mtaylor. cardiff university. u.k. i have just finished reading the last of the ten chapters in your monograph, all of which i found to be scholarly,clear, well written, and highly informative. together, they present a well documented account of your long-term investigation of the health effects of inhaled thorium-containing dusts and thoron progeny. you and your associates are to be congratulated on the high quality of your work, which is of far-reaching importance to radiological protection and environmental health. －arthur c. upton. robert wood johnson medical school. u.s.a the most invaluable finding in professor chen's study is it first discovered that either long-term inhalation of rare earth ore dusts containing thorium (carcinogens are sio2 and tho2) or inhaled tho2 or thoron short-lived progeny could induce lung cancers in the exposed miners. －nanshan zhong. guangzhou institute of respiratory disease. china.
Chapter 1 Introduction 1.1 The purpose of this monograph 1.2 The six awards for the monograph 1.3 A description of the national award(2degree) 1.4 The conclusions verified by Ministry of Science and Technology 1.5 The international level of the monograph References Chapter 2 The establishment of a portable high sensitivity exhaled thoron activity measurement system 2.1 Introduction 2.2 Uses 2.3 The improvement of this system as compared with that of the Argonne National l.aboratory(ANl) 2.4 The theory of our method 2.5 The equipment and instruments used in this method 2.6 The calibration process 2.7 The c011ection and measurement of exhaled thoron 2.8 The total error of the measurement result 2.9 The preliminary use and the assessment of our method 2.10 Conclusions 2.11 Appendix References Chapter 3 Investigation and assessment of the thorium lung burden of the miners at the Bayun Obo Rare-earth Iron Mine 3.1 Introduction 3.2 Sampling method 3.3 The measurement result of exhaled thoron activity 3.4 Conclusion References Chapter 4 Dose-effect relationship between the thorium lung burden and the blood counts of the miners at the Bayun Obo Rare-earth Iron Mine 4.1 Introduction 4.2 Methodology 4.3 Results 4.4 Discussion 4.5 Conclusion References Chapter 5 Dose-effect relationship between the thorium lung burden and the hepatic function of the miners at the Bayan Obo Rare-earth Iron Mine 5.1 Introduction 5.2 Methodology 5.3 Results 5.4 Discussion 5.5 Conclusions References Chapter 6 Dose-effect relationships between the incidence of pneumoconiosis and thorium-containing ore dusts in the Bayun Obo miners Chapter 7 An epidemiological study of lung cancer mortality in miners at the Bayun Obo Rare-Earth Iron Mine Chapter 8 Combined effects of thorium dioxide and thorium- containing rare-earth iron dusts (Th-dusts) Chapter 9 An observation on the clearance of thorium dioxide from the lung of a miner Chapter 10 Comprehensive health protection measures and its effects
