这是当我们用完每种金属或能源的一种解释。虽然这方面的信息的某些技术问题可以讨论，我觉得其适用性没有受到多少影响。这些矿产品的供应是有限的 - 如果没有新的发现，没有价格变化，没有消费方面的变化，我们很快耗尽资源。在我看来，有两个事项是非常值得关注的。
A Forecast of When We’ll Run Out of Each Metal
September 4, 2014 at 4:41 pm
Here is one interpretation of when we’ll run out of each metal or energy source. While the technicalities of some of this information can be debated, I think the general theme runs the same. There is a limited supply of these commodities – and if there are no discoveries, no price changes, and no changes in consumption, we are running out relatively soon. In my opinion, there are two caveats that are always worth considering when looking at something like this.
1. “Reserves” are an engineering number that are based on economic viability. Technically speaking, there are small concentrations of gold everywhere. It is just not usually viable to mine 0.1 g/t gold. When we will “run out” of each mineral in this chart is based on current reserves and prices. If the gold price doubles, then suddenly it is economic to mine more.
2. This chart is a reminder that something has to give. Either prices are going to have to go up, or new amazing discoveries have to be made to keep prices down. It’s basic economics, and either way it seems that there are many opportunities in the mining industry for investors and speculators on both fronts.