A method for separating combined incinerator ash using water comprising: sizing the incinerator combined ash using at least one 2-stage screen to recover a first material less than about 2mm; wet screening the first material with a screen, using water slurry, to recover a first group of the ash in the range of about 0.5mm and about 2 mm and a second group of ash less than about 0.5mm; processing the first group by (a) separating the first group using a first rising current separator operating at about at 2.0 SG into a first heavy fraction and a first light fraction; (b) separating the first heavy fraction using a second rising current separator operating at about 3.2 SG into a second heavy fraction portion and a second light fraction, wherein the second light fraction contains sand; (c) separating the first light fraction from separator using a third rising current separator or spiral separator operating at about 2.0 SG into a third heavy fraction and third light fraction, wherein the third heavy fraction is conveyed to the second rising current separator for separation; (d) magnetically separating the second heavy fraction to recover ferromagnetic metals and paramagnetic metals; (e) centrifuging at 3.2 SG the second heavy fraction to recover precious metals and heavy metal concentrate; processing the second group by (a) separating the second group using a gravity separator into a first heavy material and first light material, wherein the second light material is removed from the system; (b) de-sliming the first heavy material and then using a first oxygen encapsulated separator to recover a precious metals concentrate and a tail portion containing a copper concentrate, (c) processing the tail portion of first oxygen encapsulated separator through a second oxygen encapsulated separator to recover the copper concentrate, wherein the copper concentrate is a smelter grade copper product. sizing the incinerator combined ash using at least one 2-stage screen to recover a first material less than about 2mm; wet screening the first material with a screen, using water slurry, to recover a first group of the ash in the range of about 0.5mm and about 2 mm and a second group of ash less than about 0.5mm; processing the first group by (a) separating the first group using a first rising current separator operating at about at 2.0 SG into a first heavy fraction and a first light fraction; (b) separating the first heavy fraction using a second rising current separator operating at about 3.2 SG into a second heavy fraction portion and a second light fraction, wherein the second light fraction contains sand; (c) separating the first light fraction from separator using a third rising current separator or spiral separator operating at about 2.0 SG into a third heavy fraction and third light fraction, wherein the third heavy fraction is conveyed to the second rising current separator for separation; (d) magnetically separating the second heavy fraction to recover ferromagnetic metals and paramagnetic metals; (e) centrifuging at 3.2 SG the second heavy fraction to recover precious metals and heavy metal concentrate; (a) separating the first group using a first rising current separator operating at about at 2.0 SG into a first heavy fraction and a first light fraction; (b) separating the first heavy fraction using a second rising current separator operating at about 3.2 SG into a second heavy fraction portion and a second light fraction, wherein the second light fraction contains sand; (c) separating the first light fraction from separator using a third rising current separator or spiral separator operating at about 2.0 SG into a third heavy fraction and third light fraction, wherein the third heavy fraction is conveyed to the second rising current separator for separation; (d) magnetically separating the second heavy fraction to recover ferromagnetic metals and paramagnetic metals; (e) centrifuging at 3.2 SG the second heavy fraction to recover precious metals and heavy metal concentrate; processing the second group by (a) separating the second group using a gravity separator into a first heavy material and first light material, wherein the second light material is removed from the system; (b) de-sliming the first heavy material and then using a first oxygen encapsulated separator to recover a precious metals concentrate and a tail portion containing a copper concentrate, (c) processing the tail portion of first oxygen encapsulated separator through a second oxygen encapsulated separator to recover the copper concentrate, wherein the copper concentrate is a smelter grade copper product. (a) separating the second group using a gravity separator into a first heavy material and first light material, wherein the second light material is removed from the system; (b) de-sliming the first heavy material and then using a first oxygen encapsulated separator to recover a precious metals concentrate and a tail portion containing a copper concentrate, (c) processing the tail portion of first oxygen encapsulated separator through a second oxygen encapsulated separator to recover the copper concentrate, wherein the copper concentrate is a smelter grade copper product.