They can be many meters deep and several kilometers wide.

坝可能有很多米深、几千米宽。

At old mining sites, waste and tailings ponds could be processed for their remaining resources.

在旧场，废物和池可以处理剩余资源。

The dams are some of the largest structures in the world.

坝是界上最大的结构之一。

For now, Indonesia's HPAL plants dry-stack their tailings.

目前，印尼的高压酸浸工厂将其进行干堆处理。

When used outdoors on tailings the process can take months and is not very efficient.

当在室外对进行处理时，该过程可能要花费数月的时间，而且效率不高。

Another possibility is looking for the tailings of asteroid mining.

另一种可能性是寻找小行星采的。

Dams is abysmal The more metals.

坝糟糕透顶，金属产量却更多。

I think the mining industry is on an annual basis,   producing 12 billion tons of tailings.

我认为采业每年生产 120 亿吨。

The investors said they hope to finish a database of dam risks by late January 2020 and to create worldwide safety standards.

调查人员表示，他们希望能在2020年1月末之前做好关于坝风险的数据库，同时希望能创建一个适用于全球范围的安全标准。

Firms may opt to build tailings dams instead, although Indonesia's vulnerability to earthquakes and heavy rain will make that tricky.

企业可能会选择建造坝，尽管印尼易受地震和暴雨影响， 这将使这一做法变得困难。

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

坝是业公司处理废弃物最常见的方法，废弃物包括但不限于铁石、金子、铜。

And here just over my shoulder, these are the old workings, what they call tailings, it's waste effectively, from previous mine workings.

就在我的肩膀上，这些是旧井，他们称之为，它是以前井工作中的有效废物。

The reason firms continue to build upstream dams such as the one that brumugenio is not because they are safe but because they are cheap.

企业继续建造像布鲁马琴欧那样的上游坝，并不是因为它们安全，而是因为它们便宜。

But the process also produces a great deal of toxic slurry, known as tailings in mining jargon, and these are difficult and expensive to dispose of safely.

但这一过程也会产生大量有毒泥浆，在采术语中称为，这些很难且成本高昂地安全处理。

It's an industrial mine, so you'll see giant trucks and processing facilities and tailing ponds and all the things you see at a big open pit mine.

这是一座工业山，所以你会看到巨大的卡车、加工设施、库以及大型露天场里的一切东西。

Yet there are no established standards, or rules, defining what a tailings dam is, how to build one and how to care for a dam when it is no longer in use.

但目前并没有明确的标准、规定，没有关于坝的明确定义，没有规定如何建造并维护已弃之不用的坝。

The production of ore sand is increasingly  being seen as a valuable by-product from the mining industry and one that avoids the  generation of hazardous waste known as tailings.

砂的生产越来越被视为采业的一种有价值的副产品，并且可以避免产生称为的危险废物。

At old mining sites, waste and tailings ponds could be processed for their remaining resources, but the mines themselves would also need to be cleaned up and monitored for decades to prevent the poisoning soils and water supplies.

在旧区，可以对废料和池进行处理，以获取剩余资源，但区本身也需要进行清理，并进行数十年的监测，以防止土壤和水源污染。

According to world mine, tailings, failures or WMTF a database 13 have taken place in the decade to 2017 as many as between 1948 and 1977 WNTF experts say tailings dams fail at 10 times.

根据界物坝失效数据库，截至2017年的十年间发生了13起事故，这与1948年至1977年间的情况相当。WNTF专家表示，坝的失败率提高了10倍。

It was not until the 1950s, though, after bacteria were found to be responsible for the phenomenon, that the process was commercialised to recover leftover material in tailings, the liquid and solid waste from mining operations.

但直到 20 纪 50 年代， 人们才发现这种现象是由细菌造成的，这一工艺才被商业化， 用于回收中的剩余物质，即采作业产生的液体和固体废物。