Notably, to me, they have recovered 4x as much steel as aluminum, suggesting to me that a significant part of their recycling operation is on non-Apple PCs and

Notably, to me, they have recovered 4x as much steel as aluminum, suggesting to me that a significant part of their recycling operation is on non-Apple PCs and or quite old Apple equipment since the bulk of their current products (for in some cases 10 years) are composed of aluminum.