Environ-Metal, Inc., of Sweet Home, Oregon, has applied for approval of shot composed of copper as nontoxic for waterfowl hunting in the United States. The shot formulation is at least 99.9 percent copper by weight, with a corrosion-inhibiting coating to prevent release of copper into the terrestrial or aquatic environments. We have initiated review of the shot as required under the criteria in the nontoxic shot approval procedures in our regulations. Our approval of this shot formulation would increase the nontoxic shot options for hunters of migratory waterfowl.