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Title: South Crofty minewater study : final report
Author: National Rivers Authority South Western Region
Document Type: Monograph
The South Crofty mine is the last operational underground mine in Cornwall. The current mine is worked and dewatered to a depth of some 900 m below ground surface. In the event of closure of the mine, dewatering will cease and water levels will rise within the existing workings. Concern has been expressed that a pollution incident, similar to that arising from the outflow from Wheal Jane, might occur when the rising water reaches natural discharge level. Therefore, in January 1994, NRA South West (NRA), commissioned Knight Piesold and Partners (KPP) to undertake a study to assess the consequences of mine closure and abandonment. The study was to include four main elements: assessment of the existing operations with respect to mine workings, surface and groundwater hydrology and water quality; predictions of the impact of mine closure on water levels, water quality and the environment; recommendations for monitoring prior to and following closure; provision of preventive and remediation measures for use in the event of mine closure. Preliminary results were presented in an interim report in May 1994. Further studies have since been undertaken, including an adit survey and rock sampling for acid producing potential. This report summarises the findings and proposes recommendations for monitoring and for remedial work should mine closure occur.
Publisher: National Rivers Authority
Publication Date: 1994
Publication Place: Ashford
Subject Keywords: Mining; Rainfall; Water pollution; Copper; Tin (Metal); Monitoring
Geographic Keywords: Pool (Cornwall)
Extent: n.p. [137]
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