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USFS Logo Research Data Archive

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Displaying items 1 - 4 of 4
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A-frame yarder used to yard logs from the cutting unit directly to tidewater near Hoonah.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: transport
by mechanical methods, other than aircraft
by cable methods
Location: Alaska; Chichagof Island; Hoonah
Description: A-frame yarder used to yard logs from the cutting unit directly to tidewater near Hoonah.
Date: 7/10/1962

Slack line yarding at Heibert Bros. cutting unit near Wrangell.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: transport
by mechanical methods, other than aircraft
by cable methods
Location: Alaska; Wrangell
Description: Slack line yarding at Heibert Bros. cutting unit near Wrangell.
Date: 6/16/1961

Yarder & spar tree at Heibert Bros. cutting unit near Wrangell. High stumps & concave topography cause high log breakage & lost logs during yarding.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: transport
by mechanical methods, other than aircraft
by cable methods
Location: Alaska; Wrangell
Description: Yarder & spar tree at Heibert Bros. cutting unit near Wrangell. High stumps & concave topography cause high log breakage & lost logs during yarding.
Date: 6/16/1961

Skagit yarder spar tree slack line with turn of 3.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: transport
by mechanical methods, other than aircraft
by cable methods
Location: Alaska
Description: Skagit yarder spar tree slack line with turn of 3.
Date: 6/9/1960