go adequate	go greenhouse gas	go severe
go appropriate	go grey	go sintering
go black	go hot rolling	go slab
go blast furnace	go iron ore	go slum
go blue	go iron ore concentrate	go steel
go brown	go orange	go steel making
go child labour	go overcrowding	go sufficient
go coal	go pellet	go toxic waste
go coil	go pink	go truancy
go coke	go prescription drug	go violet
go cold rolling	go purple	go white
go damaging	go red	go working condition
go green	go rolling	go yellow