Lead poisoning and lead absorption : $b The symptoms, pathology and prevention, with special reference to their industrial origin, and an account of the principal processes involving riskLegge, Thomas Morison, Sir
Science
Lead poisoning and lead absorption : $b The symptoms, pathology and prevention, with special reference to their industrial origin, and an account of the principal processes involving risk
Legge, Thomas Morison, Sir
Lead poisoning
Industries. Cases (Ten Years:
1900-1909).
(1) Iron drums and kegs 47
(2) Harness furniture 23
(3) Tempering springs 13
(4) Other contact with molten lead 103
(5) Metal sorting 13
(6) Handling lead and dust from metallic lead 122
(7) Shot-making 14
(8) Glass-making 13
(9) India-rubber 23
(10) Yarn-dyeing 28
(11) Copper letters and opal signs 28
(12) Other lead compounds 196
(13) Miscellaneous 36
---
Total 659
(1) and (2) have been described under tinning of metals, as the
processes are similar, and in the year 1909 they were included along
with tinning of hollow-ware under the same code of regulations.
Tempering of steel buffer springs (3)[37], carried on in Sheffield,
gives rise to poisoning from fumes of molten metal into which the
springs are immersed, and from dust of skimmings, unless there is
efficient hooding and exhaust. A sample of dust collected from a
lampshade over a melting-pot was found in the Government laboratory
to contain 48·1 of metallic lead, or 51·8 per cent. of lead monoxide.
In testing the springs under a hydraulic press, and subsequent
straightening by hammering on an anvil, the thin coating of lead on
the surface scales off, and may be inhaled.
Other contact with molten metal (4) includes operations which do not
differ from several already described, in which danger is incurred from
either fumes and dust in skimming the dross or subsequent handling,
such as manufacture of solder, coating cables, filling copper cylinders
with molten lead for the purpose of bending them, and subsequently
re-immersing them in the bath to melt out the lead, tinning of nails,
making lead patterns for fenders (in which there may be danger, also,
from use of a wire brush to get rid of adhering sand), etc.
Handling lead and dust from metallic lead (5) includes operations such
as die-stamping, stamping tickets and other articles on a leaden slab
(where the danger is akin to, though probably less in degree than in
file-cutting), examining bullets, manufacture of metallic capsules,
lining boxes with sheet lead, lead glazing (where the danger is
essentially that of plumbing work), etc.
Public-domain text, read in full here on John Shaqi.
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