Copper 4% to 8%, 3,000 ton, 500 ton extencivo month x 12 months to 60 months Copper 8% to 12%, 1,000 ton, 500 ton extencivo month x 12 months to 60 months copper from 14% to 20.9%, 500 ton, 500 ton extencivo month x 12 months to 60 months copper from 20% to 25%, 500 ton, 500 ton extencivo months x 12 months to 60 months covers 25% to 35%, 500 ton, 500 ton extencivo month x 12 months to 60 months tantalum 22 % to 28 % , 10 ton monthly production of 10 . ton tantalum 30 % to 38 % , 15 ton monthly production of 15 ton tantalum 40 % to 46 % , 10 ton monthly production of 15 ton tantalum 45 % to 55 % , 10 ton monthly production of 10 tontantalum content of 55% to 60% , monthly production of 5 ton 5 tonlevels of tantalum 60 % to 72 % , 5 ton monthly production of 5 ton
