The Days of Prosperity: When the stone downstream was exhausted, the miners went upstream. In 1971, 16 mining companies applied to begin mining the 1500 hectares of Chingshui valley.
下游石頭撿盡，採礦人一路溯溪而上，民國六十年開始，在清水谷地一千五百公頃的林地上，就有十六家公司申請開礦。