ᎯᎠ ᎠᎾᎵᏖᎸᎲᏍᎬ ᎦᏁᏰᎩ ᏰᎵ ᎤᏝᏅᏛ ᎠᏓᎦᏴᎵᎨ ᎭᏫᎾᏗᏢ ᏳᏔ ᎨᏒᎢ ᎦᏛᎬᎢ ᎤᏔᏂᏗ ᎦᏙᎯ ᏗᏓᎴᎲᏍᎬ ᎠᎹ ᎾᏍᎩᎾᎢ ᎠᎹ ᎠᎴ mining, ᏥᏄᏍᏗ ᎠᏔᎴᏒ ᎠᎹᏱ ᏥᏄᏍᏗ ᎾᏍᎩᎾᎢ hydroelectric ᎤᎳᏂᎬᎬ. ᎤᎴᏅᎲ ᎭᏫᎾᏗᏢ ᎯᎠ 1950s ᎠᎴ ᎤᏍᏆᏛᎩ ᎭᏫᎾᏗᏢ 1963, ᎾᏍᎩ ᏥᏄᏍᏛᎩ ᎦᎸᎳᏗᎨᏍᏗ ᎧᏃᎮᎸᏗ ᎠᎴ ᏚᎦᏘᎸᏒ ᎾᎥᎢ conservationists. ᎠᎴᏅᏔᏅ, ᎠᏓᎦᏴᎵᎨ ᏥᏄᏍᏛᎩ ᎾᏍᏋ ᎤᏁᏍᎨᎲ ᎭᏫᎾᏗᏢ ᎠᏕᏲᎲ Canyon, ᎠᎴ ᎯᎠ conservationist ᎠᏓᏅᏏᏙᎠ traded ᎯᎠ ᎠᎾᎵᏖᎸᎲᏍᎬ ᎦᏁᏰᎩ ᏰᎵ ᎤᏝᏅᏛ ᎠᏓᎦᏴᎵᎨ ᎾᏍᎩᎾᎢ ᎢᏤ ᎦᏬᏂᎯᏍᏗ Ꮎ ᎠᏍᎪᎸᏙᏗ. ᎤᏝᏏᏛ, ᎯᎠ Sierra ᎤᎾᏙᏢᎯ ᎤᎾᏓᏡᎩ ᎤᎩᏒ Ꮝ ᎠᏂᎩᏍᏗ ᏧᏓᎴᎾᎢ ᎯᎠ ᎧᏁᎢᏍᏔᏅ ᎠᏓᎦᏴᎵᎨ.