▁the ▁line ▁of ▁duty ▁is ▁awarded ▁a ▁post hum ous ▁silver ▁medal , ▁ ▁A ▁person ▁who ▁is ▁disabled ▁by ▁inj uries ▁received ▁in ▁the ▁line ▁of ▁duty ▁is ▁awarded ▁a ▁bronze ▁medal . ▁ ▁References ▁▁ ▁Category : A wards ▁established ▁in ▁ 2 0 1 1 ▁Category : Or ders , ▁decor ations , ▁and ▁med als ▁of ▁the ▁People ' s ▁Republic ▁of ▁China <0x0A> </s> ▁Z ine b ▁is ▁the ▁chemical ▁comp ound ▁with ▁the ▁formula ▁{ Z n [ S 2 CN ( H ) CH 2 CH 2 N ( H ) CS 2 ]} n . ▁Struct ur ally , ▁it ▁is ▁class ified ▁as ▁a ▁coord ination ▁polym er . ▁▁ ▁This ▁pale ▁yellow ▁solid ▁is ▁used ▁as ▁fung ic ide . ▁ ▁Production ▁and ▁applications ▁It ▁is ▁produced ▁by ▁tre ating ▁eth yl ene ▁bis ( d ith i oc ar b am ate ) ▁sod ium ▁salt , ▁" nab am ", ▁with ▁z inc ▁sul f ate . ▁This ▁procedure ▁can ▁be ▁carried ▁out ▁by ▁mixing ▁nab am ▁and ▁z inc ▁sul f ate ▁in ▁a ▁sp ray ▁tank . ▁ ▁Its ▁uses ▁include ▁control ▁of ▁down y ▁mil de ws , ▁rust s , ▁and ▁re df ire ▁disease . ▁In ▁the ▁US ▁it ▁was ▁once ▁registered ▁as ▁a ▁" General ▁Use ▁P estic ide ", ▁however ▁all ▁registr ations ▁were ▁volunt arily ▁cancel led ▁following ▁an ▁E PA ▁special ▁review . ▁It ▁continues ▁to ▁be ▁used ▁in ▁many ▁other ▁countries