Article 7 with regard to the exploration and development of mineral resources , the state applies the principles of unified planning , rational geographical distribution , multi - purpose exploration , rational mining and multi - purpose utilization 第七条国家对矿产资源的勘查、开发实行统一规划、合理布局、综合勘查、合理开采和综合利用的方针。
The construction projects of water conservancy are multi - purpose utilization projects mostly . different departments and different areas are benefited from them . they benefit the economic , social and also environmental sectors 水利建设项目大多是综合利用项目,有不同的受益部门和不同的受益地区,既有经济效益也有社会效益,还有环境效益。