===成本===
For cost comparisons between hand drilling and percussion drilling: [http://www.wellspringafrica.org/WebManual/costcomp.htm Wellspring Africa's Hand Powered Percussion Drill] illustrates costs for materials, tools, and labour.如果想比较人工挖掘井与冲击钻井的成本，请点击：[http://www.wellspringafrica.org/WebManual/costcomp.htm 非洲泉源组织手动冲击钻井] 阐明了材料、工具和人力成本。
===实地经验===