Lloyd O L
Lancet. 1978 Feb 11;1(8059):318-20. doi: 10.1016/s0140-6736(78)90084-3.
Between 1968 and 1974 there was a significantly large number of deaths from respiratory cancer among members of a Scottish community living near and downwind from a steel foundry. The air in that area was polluted by metallic particles from the foundry.