Keywords: 52. PHOTOCOPY OF DRAWING AMMONIA LEACHING PLANT ROOF TRUSS DETAILS, SACKING SHED-FLOTATION UNIT - Kennecott Copper Corp - LOC - hhh.ak0003.photos.001025p.jpg en 52 PHOTOCOPY OF DRAWING AMMONIA LEACHING PLANT ROOF TRUSS DETAILS SACKING SHED-FLOTATION UNIT - Kennecott Copper Corporation On Copper River Northwestern Railroad Kennicott Valdez-Cordova Census Area AK LOC-image hhh ak0003/photos 001025p 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 |