FILE - In this May 29, 2019 file photo, Eric Olson, right, gathers his tools as contractor Robert Radotich uses a backhoe to dig areas so the soil stratification can be observed, which will help them engineer and design the infiltration pods for the PolyMet copper-nickel mine in Hoyt Lakes, Minn. The Minnesota Court of Appeals is deciding whether to grant requests by opponents of the proposed PolyMet copper-nickel mine to cancel two of its most important permits and order further proceedings. (Anthony Souffle/Star Tribune via AP, File)
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