They might have antimony, bismuth, or cadmium. All are toxic. Also, many other components on the board could include God-knows-what. I'm not sure what Apple

They might have antimony, bismuth, or cadmium. All are toxic. Also, many other components on the board could include God-knows-what. I'm not sure what Apple has or hasn't cut out of their stuff, but there's bound to be plenty of bad stuff left in there. I certainly wouldn't want to use that oven again.