Coal with high radioactivity level and residue will be harmful to environment of storing site, affective the reuse of residue.

In addition, there also existed the hybridization of the crustal substance which contained OS with high radioactivity during the formation of the sulfide nickel deposit.

The results show that the low gamma shale were deposited in the lake-flooding stage which inhibited the deposition of minerals with high radioactivity such ask-feldspar and mica.