Keywords: 47. PHOTOCOPY OF DRAWING, AMMONIA LEACHING PLANT - Kennecott Copper Corporation, On Copper River ^ Northwestern Railroa - LOC - hhh.ak0003.photos.001020p.jpg en 47 PHOTOCOPY OF DRAWING AMMONIA LEACHING PLANT - Kennecott Copper Corporation On Copper River Northwestern Railroad Kennicott Valdez-Cordova Census Area AK LOC-image hhh ak0003/photos 001020p Unknown employee of the United States government http //www loc gov/rr/print/res/114_habs html Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscape Survey Collection Rights and Restrictions Information 150px HABS-source PD-USGov Technical drawings of Kennecott Alaska |