TABLE 1. Summary of fluoride content in serum and nails.

	No. of workers investigated	Fluoride content in serum (mg/l)	Fluoride in nails (mg/kg. of ash wt.)
Pot – Room Workers	50	0.06 – 0.15	0.09 – 3.77
Non Pot – Room Workers	10	0.02 – 0.04	0.39 – 1.15