Sample Name

Radium equivalent activity (Bq/kg)

External hazard index

Range

Range

Induction furnace slag

56.55 - 162.90

0.15 - 0.44

Ladle furnace slag

53.43 - 171.40

0.15 - 0.47

Air pollution control dust

15.25 - 131.30

0.04 - 0.36

Ramming mass

9.75 - 70.57

0.03 - 0.19