Milton,

Welding Cadmium is not at all like welding galvanized from a safety standpoint.

Cad has a much higher toxicity potential than zinc/galvanized products...

Special precautions must be made for welding, grinding etc.

Cadmium contamination can kill!

Here is an AWS fact sheet that has good data plus a long list of references at the end.

http://files.aws.org/technical/facts/FACT-22.PDF

Please do not attempt this without real precautions.  This stuff is much more poisonous, and even a small job can really hurt you.  Even welding on a small cadmium  plated part poses health risks!

While Zinc can make you ill temporarily, Cadmium has really deadly quick acting after effects, Zinc is a vitamin that the body can use a lot of, before it reaches toxic or lethal levels.