<prompt> Gadzira shanduro yakaoma zvikuru yemutsara uyu Kambani yakavambwa muna 1889 seWashington Water Power Company.  <response>: Chokwadika, shanduro yakaoma kunzwisisa zvikuru yemutsara wacho ndeiyi Kambani yakavambwa muna 1889 seWashington Water Power Company, kusvikira bhodhi revatungamiriri rabvumidza chinjo yezita kuAvista Corporation, inoshanda January 1, 1999. 