Cornish Metals Inc has started the second phase of refurbishing the New Cook’s Kitchen shaft at South Crofty tin mine in Cornwall. DEWATERING Operations will include installation of the phase II work platform to enable faster replacement of old shaft timbers with new steel guides. In parallel, the Canadian company is maintaining the water level […]
Tag: mine dewatering
Alba completes dewatering lower Llechfraith level 4
Alba Mineral Resources plc has become the first company in decades to walk on level 4 of the lower Llechfraith workings following completion of dewatering in Clogau-St David’s gold mine. EXPLORATION Along with using pump rates of up to 250 cubic metres per day, specialist geotechnical contractors also installed new platforms and ladderways to allow […]
Alba to increase dewatering rates at Clogau
Alba Mineral Resources plc has received permission to increase the dewatering rate in the lower Llechfraith workings of its Clogau-St David’s gold mine, north Wales. EXPLORATION Industry regulator Natural Resources Wales approved the company’s application for variations to its existing discharge and abstraction permits. The rates will increase in early January from 100 to 250 […]
South Crofty mine water levels fall faster than expected
Cornish Metals Inc said that water levels are falling quicker than expected during the dewatering of South Crofty tin mine. UNDERGROUND WORKINGS Operations began in early November with up to 25,000m3 per day of water pumped directly from the mine to the water treatment plant before discharge into the Red River. The Canadian company said […]
Alba begins emergency dewatering of lower Llechfraith
Alba Mineral Resources plc has begun emergency dewatering after the regulator refused to allow an increase in the abstraction rate within Clogau-St David’s gold mine, north Wales. EXPLORATION The company had applied for a temporary variation to restart pumping at the higher 100m3/day rate after heavy rain during July and August reflooded the lower Llechfraith shaft […]
Heavy rainfall hampers dewatering of lower Llechfraith workings at Clogau
Alba Mineral Resources plc hopes to extend its dewatering permit after “unseasonal and exceptional” heavy rainfall reflooded the lower Llechfraith workings in Clogau-St David’s gold mine. PERMIT VARIATIONS Initial permission was to abstract 100m3 per day for 16 consecutive days, followed by 30m3 per day until 2030 to keep the workings dewatered. The dewatering exercise […]