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Data
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1
Brazil, copper mining
Underground copper mine. Radon concentrations between 30 and 19,351 Bq/m3.
Predicted dose rate 0.81 microSv/hr. In inadequate ventilation up to 10 microSv/hr.
E-01
2
Brazil, copper mining
Extraction of copper takes place in Salobo area of the Carajás mining complex, where typical uranium concentrations are of order of 1000 ppm of U3O8.
P-04
3
USA, copper mining
Total U (Bq/g) <0.4; Total Th (Bq/g) <0.4; Total Ra (Bq/g) <0.2
S-10
4

Germany, copper mining
Copper shale mining and processing in the Mansfield region since the middle ages until 1990. About 200,000t sludge with 3-20 Bq/g Pb210/Po210. 50 million tonnes with 0.1-3 Bq/g Ra226 are deposited in dumps and may be used for road building if covered by >10cm layer under controlled conditions. In the past used in large amount as building material without control.
K-04
5
Brazil, copper mining
Radon concentration in copper underground mine is up to 10 Bq/m3.
S-10
6
 EU
Within the European Union, the problem of management of tailings from copper mining is confined to the Mansfeld region of the former GDR, where copper mining and smelting was undertaken from the Middle Ages up to the mid 20th-century. This has left a legacy of about 110 million cubic metres of waste in over 1000 waste piles. The levels of natural radioactivity in the waste range from hundreds to thousands of Bq/kg.
E-08

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