In June 2012, following strongly divergent disclosures of particulate levels between the Observatory and the US Embassy, Chinese authorities asked foreign consulates to stop publishing "inaccurate and unlawful" data.  Officials said it was "not scientific to evaluate the air quality of an area with results gathered from just only one point inside that area", and asserted that official daily average figures for Beijing and Shanghai were "almost the same with the results published by foreign embassies and consulates". 
Beyond mining in general, radon is a particular problem in the mining of uranium ; significant excess lung cancer deaths have been identified in epidemiological studies of uranium miners and other hard-rock miners employed in the 1940s and 1950s.    Residues from processing of uranium ore can also be a source of radon. Radon resulting from the high radium content in uncovered dumps and tailing ponds can be easily released into the atmosphere. 
WATCH: FROM THE ARCHIVES: Up close and personal with Ray Phiri
Copyright © 2004-2017 and respective authors.
Unauthorized republishing of content is strictly forbidden. Each and every breach of copyright will be pursued to the fullest extent of the law.
Use of this site signifies your agreement to the disclaimer .