▁a ▁button ▁that ▁many ▁thought ▁to ▁be ▁silver . ▁Hard in ▁sent ▁the ▁button ▁to ▁San ▁Francisco ▁in ▁ 1 8 5 0 , ▁where ▁it ▁was ▁lost ▁in ▁the ▁fire ▁of ▁ 1 8 5 0 ▁( poss ibly ▁the ▁San ▁Francisco ▁Fire ▁of ▁ 1 8 5 1 ? ). ▁ ▁In ▁the ▁meant ime , ▁Hard in ▁had ▁settled ▁in ▁Pet al uma , ▁California . ▁ ▁In ▁ 1 8 5 8 , ▁an ▁expedition ▁was ▁launched ▁to ▁find ▁the ▁mine . ▁ ▁As ▁with ▁many ▁stories ▁of ▁a ▁lost ▁mine , ▁nothing ▁was ▁found , ▁though ▁there ▁was ▁a ▁r ush ▁and ▁the ▁town ▁of ▁Hard in ▁City ▁was ▁created . ▁ ▁On ▁April ▁ 2 6 , ▁ 1 8 5 9 ▁Peter ▁L assen ▁and ▁Edward ▁Cla pper ▁were ▁killed ▁nearby ▁at ▁what ▁was ▁later ▁called ▁Cla pper ▁Creek ▁while ▁searching ▁for ▁silver ▁first ▁reported ▁by ▁Hard in . ▁ ▁In ▁May ▁ 1 8 6 0 , ▁news ▁of ▁the ▁First ▁Battle ▁of ▁Py ram id ▁Lake ▁caused ▁the ▁prospect ors ▁to ▁leave ▁the ▁area . ▁ ▁In ▁ 1 8 6 6 , ▁prospect ors ▁returned ▁to ▁the ▁area ▁and ▁a ▁post ▁office ▁was ▁in ▁operation ▁as ▁H arden ▁City ▁from ▁July ▁ 1 8 6 6 ▁until ▁October ▁ 1 8 6 6 ▁and ▁then ▁as ▁ ▁Har vey ville ▁from ▁October ▁ 1 8 6 6 ▁until ▁August ▁ 1 8 6 7 . ▁ ▁During ▁that ▁time , ▁ore ▁from ▁the