Lead has a utility coefficient of 95-98% while the production of lead, as it was estimated in 1987 was around 100,000 t of lead per year.
Lead ka një koeficient të shërbimeve prej 95-98% ndërsa prodhimi i plumbit, siç u vlerësua në vitin 1987 ishte rreth 100,000t plumb në vit.