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Tue, 09 Apr, 2013 01:16:17 AM FTimes-STT Report, April 9
 Kainuu Talvivaara mine gypsum pool is leaking again. Kainuu ELY Centre was informed of a leak on Sunday night. Backhoe removed the ice from the gypsum pond. Photo Lehtikuva A leak developed again in a gypsum pond of a Talvivaara nickel mine in eastern Finland on Sunday night, forcing the company to shut down mining operations to prevent water pollution by the leakage.
A similar leak had appeared in November last year at a metal factory of the company.
An environment official said the amount of wastage being released through the leak was much higher than they had estimated initially.
Talvivaara sources said at least 7,000 cubic metres of waste water was oozing out of the leak an hour, although in the morning they estimated that the leakage would be only 2,000-3,000 cubic metres per hour.
Photo Lehtikuva The company said the magnitude and direction of the leakage and the composition of water remained as rough as in the previous year.
Immediately after the appearance of the leak, the authorities started to block it and closed the metal factory as a precautionary measure.
The newly leaking drain is located in the same pool but in a block different than that of the last year.
According to the company, both the leak points are located in the older parts of the pool, where insulation is weaker. The leakage will have no negative impact on the environment as there is water storage space in the mine area, Talvivaara added.
At the moment the leaking water is being pumped into another gypsum pond and then to an open pit at the rate of 300 cubic metres per hour.
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