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  • All fields: fill
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    • Becharof National Wildlife Refuge,Alaska

    • Becharof National Wildlife Refuge,Alaska
    • Aerial photography photography;Alaska; Landscapes; Mountains;Snow; Becharof National Wildlife Refuge; Wildlife refuges
    • Becharof NWR, King Salmon, Alaska: Tundra, mountains, and still-smoldering volcanoes, part of the Pacific "Ring of Fire," fill the senses as far as the eye can see at Becharof National Wildlife Refuge. Mt. Paulik volcano, seen here, is the most...
    • Boring Equipment

    • Boring Equipment
    • Structures; Riparian environments; Rivers and streams; Habitat restoration; Wetland restoration; Wetlands; Wildlife refuges;
    • The spoils from boring under the river to place the electrical transmission lines underground are being used to fill drainage ditches.
    • Rolling Fill Material

    • Rolling Fill Material
    • Structures; Riparian environments; Rivers and streams; Habitat restoration; Wetland restoration; Wetlands; Wildlife refuges;
    • Following delivery by truck, fill material is immediately spread and compacted.
    • Refuge Work

    • Refuge Work
    • Wildlife refuges; Maintenance; Water management;
    • Using washed out rip-rap to make emergency repairs at west waterfowl unit no. 3 spillway. Note how water has cut away the new sugar-like fill below the spillway and is starting to go around end of wingwall.
    • Black-footed ferret recovery plan (Original approval: June 14, 1978).

    • Black-footed ferret recovery plan (Original approval: June 14, 1978).
    • Wildlife; Endangered species; Wildlife restoration; Captive breeding; Reintroduction;Rare species
    • Published August 8, 1988. The Black-footed Ferret Recovery Plan outlines steps for recovery of the black-footed ferret (Mustela niorioes) throughout its historical range. Evidence suggests that the ferret was widely distributed and was probably...

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