Analysis of Roll Ups - IFRS

Line	Roll Up Total Concept	Roll Up Items Concept	Count
1	nexa:CurrentTaxesPayable	ifrs-full:CurrentTaxLiabilitiesCurrent	1
2	nexa:CurrentTaxesPayable	ifrs-full:CurrentValueAddedTaxPayables	1
3	nexa:CurrentTaxesPayable	nexa:CurrentPayablesOnSocialSecurity	1
4	nexa:CurrentTaxesPayable	nexa:CurrentWithholdingTaxesPayable	1
5	nexa:CurrentTaxesPayable	nexa:OtherCurrentTaxesPayable	1
6	nexa:CurrentTaxesPayable	nexa:PayablesOnSpecialMiningLienAndSpecialMiningTax	1
7	nexa:CurrentTaxesPayable	nexa:TaxesPayableOnSocialIntegrationProgram	1

(Note that this is a work in progress!)