Latest News

The Brazilian mining regulator says that the waste piles of Sigma Lithium do not pose an 'imminent danger'.

The?agency? said in a Monday evening statement that the waste piles of Sigma Lithium at a Brazilian mining site do not pose an "imminent danger" and that it did not see any need to close them during a recent visit. ANM's Technical Staff visited the mine in January, about a month after labor inspectors had shut down the piles because they warned of an "imminent and grave risk" for workers and local residents. Sigma's stock fell by 30% when it was reported that the inspectors had made their decision on January 15th.

ANM's report does not change the Brazilian Labor Ministry's order, but it's a "boost" for the Toronto listed miner. It could be used as evidence to challenge the government of Brazil in a suit filed in January by Sigma, which seeks to reverse the closures of its waste heaps. The company announced Monday that they were resuming their mining activities at the?Grota do Cirilo in Minas Gerais state. They had previously stated that the closure of the waste piles would not affect the schedule for production.

The firm had previously stated in documents submitted to the Labor Ministry that the loss of access to the piles could have "significant economic and operational impacts" as well as jeopardizing mining activities.

The company did not respond immediately to a comment request.

BRAZIL'S LARGEST LITHIUM MINE

Sigma's Grota do Cirilo operation, its sole productive asset, is Brazil’s largest lithium -mine with an annual capacity of 270,00 metric tons lithium concentrate. The mine had been inactive for several months.

ANM's staff performed a visual assessment on site of the piles and analyzed the documentation provided by the miner.

In a press release, it stated that "ANM technicians have not identified any geotechnical abnormalities indicative of an imminent risk of global pile destabilization."

The agency noted that it found some problems during its visit but added that "it did not see any reason to take precautionary measures like closing" the piles at the time."

ANM has informed Sigma that it lacks a surface water drainage system. However, the company added that this issue is not "associated" with an imminent risk but rather a regulatory failure on the part of the firm.

A "partial rupture", as described by labor inspectors, was also dismissed at one of the waste heaps near an elementary school. ANM said the problem was "localized erosion" of a pile, which indicated "local stability" but did not pose an immediate threat to local residents. Reporting by Fabio Téixeira, Editing by Andrea Ricci

(source: Reuters)