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Title: Carnon valley update
Author: National Rivers Authority South West Region
Document Type: Monograph
Annotation: EA additional title info: 30 January 1992
The Carnon Valley has been mined for centuries and there are around 50 abandoned mines in the area. As a result there is an historic background level of pollution in the local water environment. In March 1991 operations at the last operating tin mine in the valley, Wheal Jane, stopped. Pumps that had been de-watering the mine were removed. As a result the water in the mine, which was acidic and contained significant levels of metals (including cadmium, zinc, nickel, arsenic, copper and iron) started rising. The NRA formed a special project team to monitor the highly complex situation and ensure that the mine owners prepared contingency plans. On 17 November 1991 the water reached the surface and started discharging. Carnon Consolidated Ltd put the contingency plan into action with financial support from the NRA.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Exeter
Subject Keywords: MiningWater pollutionMetalsAcidificationPollution control measures
Geographic Keywords: EA South WestWheal JaneCornwall
Extent: n.p. [110]
Total file downloads: 112

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