Lithium Americas Corp should learn more about the fate of its proposed Thacker Pass lithium mine site in Nevada this week as a federal judge has pledged to rule by Sept. 3 on whether to grant a request from Native Americans to temporarily block Lithium Americas Corp from excavating at the site.

The project was previously approved by the Trump administration and if developed, it would become one of the country’s biggest sources of lithium which is high demand for its use in electric-vehicle batterys.

A ruling for the Native Americans could signal the court may block the entire project.

Reuters reported that Chief Judge Miranda Du of the federal court in Reno, NV, held a hearing on Aug. 27 to determine whether archaeological digging at the Thacker Pass site should be blocked while she considers the broader question of whether approval should have been granted in the first place.

Tribal members say the mine would disturb ground that contains ancestral bones. The digging itself is required by federal statute to determine whether the land holds any historical artifacts.

The Vancouver-based company and the U.S. Bureau of Land Management (BLM), which controls the land, say the tribes did not participate in the mine permitting process when asked and did not share their beliefs about the land until earlier this summer, after the project was approved.

“BLM’s outreach efforts … have been reasonable and in good faith,” Arwyn Carroll, a BLM attorney, told the hearing. “The tribes never told BLM that Thacker Pass could be this type of site.”

Attorneys for the tribes say regulators did not work hard enough to contact every tribe that could have a connection to the site, especially amid the pandemic.

Du, an appointee of former President Barack Obama, last month rejected a request from environmentalists to prevent digging, but then allowed tribes to essentially make the same request.

Du gave little hint which way she may rule, though several times asked how Native American artifacts would be handled if discovered.