This was the problem that a mining company in Peru had to grapple with. The mine had finished extracting the gold from the mine so needed to ensure there was no adverse effects ongoing. The process of extraction used Cyanide to leach the gold in the ore. The cyanide is still present in the solutions from the heap leach pad and need to be treated. To do this a cyanide water detoxification plant has been setup to operate until all the cyanide has been consumed or destroyed on site.

This plant will ensure any water that comes into contact with the mine site is funnelled to the water treatment plants before being discharged off site. Discharged water must comply with strict regulations in Peru. There are limits for content of various metals, salts and the acidity level of the water.

Most of the water treated at the plants is not used by local communities, but some of it is channelled into several communities in the nearby valleys for irrigation use. The treatment plants contain reverse osmosis technology—sophisticated water purification technology that removes sulphate, carbonate and other salts from water.

The area is in a high rainfall catchment, so the plant has to cope with significant volumes of water.
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The water treatment plants conduct daily water sampling and on-site analysis, measuring various metrics including water acidity, or pH levels, and turbidity. The environment team also regularly collects water samples off site and sends the samples to an independent, certified laboratory for analysis. Results from these analyses are reported to authorities on a quarterly basis to ensure the mine is in compliance with its permit and Peruvian regulatory standards.

Without the Palert system the risk of contamination was too great and the whole site would have required significant work to remove the cyanide rock to be processed in alternative plants, causing years of truck movement and general disturbance of the neighbourhood.

To find out more about earthquake early warnings , seismic warning systems and  earthquake detection please visit the website at http://www.earthquakeearlywarning.systems/   
or in Spanish at https://www.earthquakeearlyalert.com/ .

Alternative email eewsinfo@jenlogix.co.nz  

​Jenlogix is pleased to announce the availability of the new generation of crystal-based seismometers, the Palert220.  This new type of device is more sensitive than traditional MEMS based sensors and is comparable with many high end/high priced/high maintenance traditional force balance units.
 
When monitoring large structures for wind effects, as well as the effect of nearby construction, demolition or even heavy traffic, high sensitivity is required to ensure correct assessment. The Palert 220 can provide this level of sensitivity at an affordable price.
 
Like other Palert devices, the unit can also be used for structural health monitoring, seismic measurements, vibration control and motion analysis. Also, as with other Palert devices, the Palert 220 is calibrated in an international test lab. The benefit is that it does not need re-calibration, saving on the regular need to use expensive calibration engineers.
 
As one of the new generation of accelerometers using crystal technology, the Palert 220 provides a simple solution to sensitive monitoring.  The Palert 220 is also an ideal unit for seismic research, since being a crystal sensor, it requires no ongoing calibration yet has the sensitivity required for detailed analysis. Tall buildings require this extra sensitivity of a Palert 220 to ensure that the wind vibration does not cause any issue with occupants.
 
Data is also sent directly to the cloud for analysis and allows for engineers to see remotely the issues so they can provide a plan of action accordingly. Onsite benefits include immediate vibration warning, real time value display on LCD, connecting to a Signal Tower to show warning and maintaining a safe working and living environment. Offsite benefits include reporting via web browser of details, Palert 220 push messages from the unit and enabling the engineer to alter work accordingly.
 
Unlike an earthquake which transmits the vibrations from the ground up, the Palert 220 can effectively monitor the effect of even the smallest of breezes on a building. This information in turn can assist in providing a comfortable environment for the occupants.