Significant reserves remain, which have attracted exploration efforts in the 1980s and 1990s.

Although some areas of the coalfield are effectively worked out, considerable reserves remain.

Darlington's reserves remain healthy, the £1.415m. to be spent in this year's budget, said the director of central services.

At the same time, most of China has already been explored for oil, making it unlikely that significant new reserves remain to be found.

However, some nations haven't updated their information and assume reserves remain at the same levels even with withdrawals.

It is not yet clear whether the diamond field has been mined out, or whether large reserves remain.

So, as long as those loans need to be covered, the reserves will remain.

So, with a heavy heart, the reserve remains in the budget, and until such a time as we recognize that the situation is improving.

There is much evidence that deep reserves of hydrocarbon fuels remain to be tapped.

Still, the reserve that had built up between the two men, an impenetrable wall for the past five years, remained.