▁workers , ▁many ▁residents ▁were ▁forced ▁to ▁em igr ate ▁to ▁find ▁work . ▁ ▁At ▁the ▁beginning ▁of ▁the ▁ 2 1 st ▁century , ▁agricult ure ▁and ▁small ▁business es ▁provide ▁only ▁ 1 7 % ▁of ▁the ▁jobs ▁in ▁the ▁municipality ▁and ▁about ▁three - quarters ▁of ▁the ▁workers ▁comm ute ▁to ▁nearby ▁towns ▁for ▁work . ▁ ▁It ▁shares ▁an ▁upper ▁secondary ▁school ▁with ▁B ann w il ▁and ▁A ar w angen ▁and ▁a ▁G ymnasium ▁with ▁Lang ent hal . ▁ ▁Geography ▁ ▁Schwar zh ä us ern ▁has ▁an ▁area ▁of ▁. ▁ ▁Of ▁this ▁area , ▁ ▁or ▁ 5 2 . 0 % ▁is ▁used ▁for ▁agricult ural ▁purposes , ▁while ▁ ▁or ▁ 3 3 . 8 % ▁is ▁for ested . ▁▁ ▁Of ▁the ▁rest ▁of ▁the ▁land , ▁ ▁or ▁ 1 0 . 3 % ▁is ▁settled ▁( build ings ▁or ▁roads ), ▁ ▁or ▁ 2 . 9 % ▁is ▁either ▁rivers ▁or ▁la kes . ▁ ▁Of ▁the ▁built ▁up ▁area , ▁housing ▁and ▁buildings ▁made ▁up ▁ 5 . 8 % ▁and ▁transport ation ▁infrastr ucture ▁made ▁up ▁ 3 . 4 %. ▁ ▁Power ▁and ▁water ▁infrastr ucture ▁as ▁well ▁as ▁other ▁special ▁developed ▁areas ▁made ▁up ▁ 1 . 1 % ▁of ▁the ▁area ▁ ▁Out ▁of ▁the ▁for ested ▁land , ▁ 3 1 . 7 % ▁of ▁the ▁total ▁land ▁area ▁is ▁heavily ▁for ested ▁and ▁ 2 . 1 % ▁is ▁covered