Listed Benguet Corp., the oldest mining firm in the country said the minor and intermittent mine tailings leak in Antamok, Benguet has been put under control.
In a report to the Philippine Stocks Exchange, Benguet Corporation said the mine tailings leak was discovered following regular inspection conducted by the company after the heavy rains brought by super typhoon “Lawin.”
The leak occurred in the drain tunnel of the Antamok underground mines which has not been operated by the company since 1989.
Upon investigation, initial findings showed the mine tailings came from the Antamok tailings impoundment area swhich may have entered the drain tunnel through a breach caused by the intense rains. No further leaks have been observed to date,” it said.
Preliminary estimates showed only a negligible 50,000 metric tons (MT) of tailings material leaked into Liang River which is substantially less compared to previous incidents involving other mines.
The mining firm stressed that there were no reports of damage to property or injury to persons directly attributable to the leak. “Claims of incidental damages due to siltation, if any, are being verified.
Discussions have also been held with the local communities,” it said.
In an earlier letter to Cordillera office of the Environmental Management Bureau (EMB-CAR) Regional Director Reynaldo Digamo and Mines and Geosciences Bureau office at the Cordillera Autonomous Region (MGB-CAR) Regional Director Fay Apil, the company stated that upon discovery of the mine tailings leak, it mobilized its workforce and equipment to prevent any further outflow and has initiated containment and clean-up activities in the immediate area to make sure that the residents in the surrounding communities will not be affected.
Benguet Corp likewise immediately conducted water sampling along the Liang River.
Laboratory test showed there are no toxic substances present in the water samples, which means that the leaked tailings material is safe and inert. Samples will be sent to a third party for independent laboratory analysis.
The company said the Antamok tailings impoundment area has not been used since 1998 when the Antamok open pit and underground mine temporarily ceased to operate.
The tailings impoundment dam now serves as catchment area for mine tailings from the rampant unregulated small scale mining activities in the upstream area, which would otherwise pollute the environs. However, it was explained that both the open pit and underground mines and its facilities are in continuous care and maintenance through the years and there are technical studies going on for the progressive rehabilitation of the areas such as tailings reprocessing project, conversion of open pit to water reservoir for bulk water project, engineered sanitary landfill (ES) with waste-to-energy project, and Minahang Bayan.
Benguet Corp assured that it is continuously implementing the necessary corrective and permanent measures to prevent the occurrence of similar incidents in the future.
Benguet Corp was established on Aug. 12, 1903 as Benguet Consolidated Mining Company. The company changed its name to Benguet Consolidated Inc. in 1956, and finally to its present corporate name in 1980.
The company explores for mines, currently produces and markets gold, nickel laterite ore, limestone; and through its subsidiaries, provides logistics, port and shipping services, and healthcare services; sells industrial equipment and supplies; develops water resources and real estate projects. Aside from mining and mineral exploration, Benguet Corporation also ventured into various projects through several wholly owned subsidiaries. It engaged into healthcare and diagnostics services through BenguetCorp Laboratories; mining logistics through Arrow Freight Corporation; trading of industrial equipment and supplies through Benguetrade Inc.; port services through Keystone Port Logistics and Management Services Corporation; shipping services through Calhorr 1 Marine Services Corporation and Calhorr 2 Marine Services Inc.; and real estate development and lime production through BMC Forestry Corporation.
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