when did they stop using lead solder in plumbing
Plumbing The use of lead for potable water declined sharply after World War II because of increased awareness of the dangers of lead poisoning. At this time, copper piping was introduced as a better and safer alternative to lead pipes.[11][12]
Vein Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.
DeWalt After buying the company in 1949, American Machine & Foundry Co., Inc. sold it to Black & Decker in 1960.
Catalytic converter As an alternative, catalytic converters were moved to a third of the way back from the engine, and were then placed underneath the vehicle.
Lead(II) nitrate When heated, lead(II) nitrate crystals decompose to lead(II) oxide, oxygen and nitrogen dioxide.
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