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Ni-Cd batters are not that popular anymore....having been supplanted by NI-MH and LI-oh or LI-Po types--which have FAR More energy density and capacity for given ounce of cell weight. I also think that it is figured that one will NOT bust open an old -NI-CD battery and then grind the cadmium in the mixture to find dust and then stand there an BREATHE the dust...
As for chassis plating....I THINK it wa smore along the line of "didn't know better" back then....about the health risks of Cadmium dust and such. Just like asbestos.... I would say it is a lOT more hazardous to breathe cadmium over the short-term than asbestos though...
I have watched an old film on production of the 1929-30 Philco radio chassis sets and cabinets. It is SCARY...how LITTLE regard to worker safety there was then. NO interlocks on the metal presses. NO ventillation over the area where wood was being glued...with a LOT of fumes coming up and NO respirators on the workers...etc...etc..
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