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Vale, a company responsible for the dam that broke and killed at least 121 people in Brumadinho (MG), said in a statement Saturday (2) that the sound system, which he did not not touched, was manual, triggered by emergency control center that operates 24 hours a day from outside the mine.
The company said officials had investigated why the sirens were not working and, according to the miner, initial information indicates that the fault is due to the speed of the mud wave. According to firefighters in Minas Gerais, it reached 80 km / h.
Vale also notes that the dam was subjected to inspections every two weeks, reported to the National Mines Agency (ANM). The last one recorded in the federal system took place on December 21, 2018. This year, inspections were carried out on January 8 and 22.
"An external emergency simulation was conducted on June 16, 2018, under the coordination of the Civil Defense and with the support of Vale, as well as an internal training with employees on October 23, 2018" , follows the text.
The company also indicates that the evacuation route provided for in the emergency plan for the mining dams has been implemented in Brumadinho. It was reported to staff during the training in October.
On the images published by the press on Friday (1st), which show the time when the dam broke out, the company made sure that no work was done on the site.
According to Vale, the professionals in the company appearing in the recordings "performed routine tasks". The statement states that the presence of employees in inactive dams "is part of the routine measures and basic procedures for the safety and maintenance of these structures". For example, they would be responsible for collecting the data determined by the ANM.
On the presence of ducts that drained the dam water, the miner states that they are part of the standard safety measure. The broken dam still had drains installed at 2o18. "It should be remembered that it was preventive measures, because the technical reports indicated the total stability of the structure," Vale says.
On Saturday, the death toll in Brumadinho reached 121. There are still 226 people missing.
According to Vale 's emergency plan for the dam, announced on Friday by Folha six mermaids were off the road and were facing possible flooding. The plan also provided that in the event of structure collapse, residues and mudslide could reach the juvenile cafeteria and administrative area in one minute.
This place is one of the first to be buried in tragedy, where they were among the dead and missing. The paper estimated that a potential dam failure would destroy its facilities and could generate a wave of tailings up to 65 kilometers from the breakpoint.
For specialists, because of the proximity of the facilities to the waste rock dyke, the professionals in the area would have little chance of escaping even though the sound alert had worked.
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