How deadly is the mercury in Fluorescent Light?

It is very very deadly, read the news of the chinese workers in compact fluorescent bulb factory.

Deadly Mercury In Fluorescent Light

Some of the interesting point there:

1. If the mercury is exposed, room should be cleared for between 15 and 30 minutes because of the danger of inhaling mercury vapour.
2. Mercury poisoning in lighting factories as a growing public health concern.
3. The tests found that 68 out of 72 workers were so badly poisoned they required hospitalisation.

Read more of the story here.