Information sources: mineral and waste properties
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The record rainfall of winter 2013 caused a substantial increase in the number of 'sinkholes' as a result of collapse of natural underground cavities and 'crownholes', which are a consequence of old mining activity. Areas subject to sinkholes are those where sands, gravels and clays overlie chalk, limestone, gypsum and...Explore the subscription options here to get full access to isurv, including downloads.
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