First i would like to say i have been scrapping sence i was old enough to hold a screwdriver (literly) and have always found or figured. Out what i needed to know but i am stumped when it comes to certain. Aspects of chemistry in scraping so i have 2 questions that will completely open my understanding of it . first can you dump whole scrap boards ect in to aqua rigia after incinerating? And exstract just the silver platinum gold ect. And if so for purity reasons would there be a order of exstraction? Because of the dif in metal weight? Like siver first then plat ect? Thanks in advance folks!