A method for preparing clean aggregate from a waste stream, the method comprising: providing material from the waste stream; sizing the material to recover a first material less than about 19mm; wet screening the first material with a first screen, using water slurry, to recover groups of auto shredder residue of disparate sizes; processing each of the groups by: (a) separating a first group using a first density separator operating at about 1.6 SG into a first heavy fraction and a first light fraction; (b) separating the first heavy fraction using a second density separator operating at about 3.2 SG into a second heavy fraction and a second light fraction, wherein the second heavy fraction contains metals; (c) magnetically separating the second light fraction to recover ferromagnetic metals and paramagnetic metals; (d) separating magnesium and aluminum from the second light fraction using at least two eddy currents (155, 156); (e) applying a size reducer to the second light fraction; (f) wet screening the second light fraction with a second screen, using water slurry, to recover first unders and first overs; (g) wet screening the first overs with a third screen, using water slurry, to recover second unders and second overs; (h) using density separation to separate the second overs into a third light fraction further separated by a gravity separator into a fourth light fraction and a fourth heavy fraction, and a third heavy fraction to recover precious metals and heavy metal concentrate, wherein the fourth light fraction is clean aggregate. providing material from the waste stream; sizing the material to recover a first material less than about 19mm; wet screening the first material with a first screen, using water slurry, to recover groups of auto shredder residue of disparate sizes; processing each of the groups by: (a) separating a first group using a first density separator operating at about 1.6 SG into a first heavy fraction and a first light fraction; (b) separating the first heavy fraction using a second density separator operating at about 3.2 SG into a second heavy fraction and a second light fraction, wherein the second heavy fraction contains metals; (c) magnetically separating the second light fraction to recover ferromagnetic metals and paramagnetic metals; (d) separating magnesium and aluminum from the second light fraction using at least two eddy currents (155, 156); (e) applying a size reducer to the second light fraction; (f) wet screening the second light fraction with a second screen, using water slurry, to recover first unders and first overs; (g) wet screening the first overs with a third screen, using water slurry, to recover second unders and second overs; (h) using density separation to separate the second overs into a third light fraction further separated by a gravity separator into a fourth light fraction and a fourth heavy fraction, and a third heavy fraction to recover precious metals and heavy metal concentrate, wherein the fourth light fraction is clean aggregate. (a) separating a first group using a first density separator operating at about 1.6 SG into a first heavy fraction and a first light fraction; (b) separating the first heavy fraction using a second density separator operating at about 3.2 SG into a second heavy fraction and a second light fraction, wherein the second heavy fraction contains metals; (c) magnetically separating the second light fraction to recover ferromagnetic metals and paramagnetic metals; (d) separating magnesium and aluminum from the second light fraction using at least two eddy currents (155, 156); (e) applying a size reducer to the second light fraction; (f) wet screening the second light fraction with a second screen, using water slurry, to recover first unders and first overs; (g) wet screening the first overs with a third screen, using water slurry, to recover second unders and second overs; (h) using density separation to separate the second overs into a third light fraction further separated by a gravity separator into a fourth light fraction and a fourth heavy fraction, and a third heavy fraction to recover precious metals and heavy metal concentrate, wherein the fourth light fraction is clean aggregate.