|
Lead
and you-
click to download PDF(905K): download requires Adobe Acrobat People have had a troubled relationship with lead since the dawn of
human history . It is abundant, easily mined, very malleable, corrosion
resistant, and it seems to suit many of the jobs it has been put to –
unfortunately, if you get too much of it in your body it can literally
drive
you mad, blind, or deaf, or even shut down your kidneys, and cause
death. It
has been used in Roman plumbing and cooking pots, in the solder on cans
of
food, to make toys, as a paint additive, in toothpaste tubes, in
bullets and
shot, and in batteries. It has been a common ingredient in glass,
crystal,
ceramics, pewter, radiation shields, as an alloy in type used in
printing
presses and, perhaps the most environmentally damaging of all, as an
anti-knocking agent in petrol. Many of these uses were thought of in the
industrial age, centuries after it was known that lead was poisonous.
|
|