A tailings dam is the most common waste disposal method for a mining company, whether it is mining iron ore, gold or copper.

尾矿坝是矿业公司处理废弃物最常见的方法，废弃物包括但不限于铁矿石、金子、铜。

They say Japan first needs to make full use of safe disposal methods and then needs to consult with them before emptying the water into the sea.

他们认为，日本应最大化地采用安全的方法处理核废水，而在将这些净化过的核废水排入大海前，应与两国进行协商。