The phosphate reserves on Nauru are now almost entirely depleted.

The Trust manages long-term investments, intended to support the citizens once the phosphate reserves have been exhausted.

The Province of Khouribga has a large phosphate reserve estimated 35 to 40 billion cubic meters, which is ranked first at the national level.

The accurate determination of peak phosphorus is dependent on knowing the total world's phosphate reserves and the future demand for rock phosphate.

Morocco has approximately two thirds of the world's phosphate reserves.

The phosphate reserves on Nauru, the island's only natural resource and source of income, are expected to run out in five or ten years.

For example, a sand and gravel deposit requires an approach that is completely different from the methods used to evaluate a phosphate reserve.

In the industrial sector, phosphates are Togo's most important commodity, and the country has an estimated 60 million metric tons of phosphate reserves.

Morocco possesses 75 percent of the world's phosphate reserves.

By 1890, the phosphate reserves had been exhausted.