ᎾᎿ 17 ᎠᎾᏱᎵᏒ 1968, ᎠᎳᏏᏅᏙᏗ ᏂᏚᏍᏗᏓᏅ ᎢᎬᏂᏌᏅᎯ ᎯᎠ ᏰᎵ ᏄᎵᏂᎬᎬᎾ ᎯᎠ ᎠᏕᎸ ᏓᎶᏂᎨ ᎦᏁᎲ, ᎠᎴ ᏔᎵ-tiered pricing ᎠᏓᏅᏖᏗ ᏥᏄᏍᏛᎩ ᎪᏢᏅ ᎾᏍᎩ ᏯᏛᎿ ᎠᏕᎸ ᏓᎶᏂᎨ ᏥᏄᏍᏛᎩ ᏙᎢ ᎬᏔᏅᎯ ᎠᏓᏁᎳᏅᎯ ᎠᏰᎵ ᏚᎾᏙᏢᏒ ᎠᏕᎳ ᎾᎾᎢ ᎯᎠ ᎠᎦᏴᎵ $35.00 ᎾᏍᎩ ᎢᎬᏂᏏᏍᎩ troy ᏄᏓᎨᏒ ($1.13/g) ᎠᎴ ᎯᎠ ᏧᎬᏩᎶᏗ ᎠᏕᎸ ᏓᎶᏂᎨ ᎾᎿ ᎯᎠ ᎤᏤᎵᏓ ᎤᏂᎾᏗᏅᏗ ᏥᏄᏍᏛᎩ ᎠᎾᏓᏁᎲ ᏒᏃᏱ ᎡᎯ ᏅᏙ; ᎪᎯ ᏔᎵ-tiered pricing ᎢᏯᏛᏁᎵᏓᏍᏗ ᏥᏄᏍᏛᎩ ᏚᏲᏒᎩ ᎭᏫᎾᏗᏢ 1975 ᎯᎳᎪ ᎢᏳ ᎯᎠ ᏧᎬᏩᎶᏗ ᎠᏕᎸ ᏓᎶᏂᎨ ᏥᏄᏍᏛᎩ ᎠᎦᏍᎦᏂ ᎠᏩᏛᏗ Ꮝ ᎠᏎᏊᎢ-ᎤᏂᎾᏗᏅᏗ ᎤᏩᎾᏕᏍᎩ. ᎠᏰᎵ ᎠᏕᎸ ᏗᏗᏱ ᏙᎢ ᏚᏂᏴ ᎧᏃᎮᏍᎩ ᏄᎵᏍᏔᏅ ᎠᏕᎸ ᏓᎶᏂᎨ ᎠᎾᏗᏒᎯᎯ ᏥᏄᏍᏗ ᎠᏓᎾᏅ ᏧᎬᏩᎶᏗ ᎾᏍᎩ ᎤᏁᎳᎩ ᎯᎠ ᎤᏩᎾᏕᏍᎩ ᎤᎭ ᏂᎦᎥᏊ ᏭᏪᏙᎢ ᎢᏳᏕᏘᏴᏓ. ᎯᎠ ᎤᏔᏂᎢᏍᏗ ᎠᏕᎸ ᏓᎶᏂᎨ ᏧᎬᏩᎶᏗ ᎠᎦᏘᏯ ᎭᏫᎾᏗᏢ ᎯᎠ ᎡᎶᎯ ᎨᏒᎢ Ꮎ ᎯᎠ ᎠᎹᏰᏟ ᏂᎬᎾᏛ ᎠᏰᎵ ᎧᏃᎯᏯᏍᏗ ᎠᏕᎸ ᏗᏗ ᎭᏫᎾᏗᏢ ᏄᏯᎩ.