ore deposit

That same year the ore deposit began to run out.

Most of his publications are on the great ore deposits.

Some of the major ore deposits on Earth are formed by this process.

Deposits of iron ore have been known in this area since 1799.

Hell, when they found that ore deposit, you couldn't find anybody in town for a month.

There were two miners and they could look for ore deposits.

Other problems were caused by the location of the ore deposits.

Large deposits of iron ore were found in these hills years ago.

However the existence of rich ore deposits was not realized until around 1918.

The ore deposit was discovered in 1793, but mining did not start until 1809.