B046 Z-99 AN AEM SURVEY OF A LEAKING LANDFILL 1 Abstract This study presents results obtained from a remarkably small-scale helicopter airborne electromagnetic (AEM) survey of a closed landfill. The landfill occupying a former quarry is situated among shallow worked-out coal seams (pillar and stall workings) and was located over at least two mineshafts that occupied the quarry floor. The landfill was known to be leaking from an extensive borehole investigation that took place in the 1970’s when the landfill was active. Redevelopment issues and associated proposed surface extraction of coals have renewed interest in the possible pollution threat of


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