原矿开采和铜、锌、黄铁矿精矿以及其他对国民经济有价值的矿产品的生产几乎总是要危害自然环境的。正如乌恰林矿业人员的经验所证明的那样,工艺越完善以及生产的文明程度越高,使自然资源遭受破坏,污染和损失的废物也就越少。 Ore mining and the production of copper, zinc, pyrite concentrates and other minerals of value to the national economy almost always endanger the natural environment. As evidenced by the experience of the Uqaling mining personnel, the more sophisticated the craft and the more civilized the production, the less natural wastes are destroyed, the less wasted and lost wastes.