underground mine

It can take decades for a large underground mine to move into the black.

They live in underground mines, searching for the light of day.

Visitors can also take a tour of an old underground mine.

There were also at least six underground mines in the valley.

There is an underground mine employing about 40 people three miles to the west.

In the past, underground mine fires have also been a threat.

The underground mine was finally closed and allowed to flood in 1999.

For underground mines, rehabilitation is not always a significant problem or cost.

During the years the underground mine has been made gradually deeper.

The underground mine shafts have not been used for a long time.

In the late 1980s a new open pit started operations over the top of the old underground mine.

By 1999, the project operated exclusively as an underground mine.

An underground mine is proposed, not an open pit operation.

Most of these workers had never worked in an underground mine prior to surface mining.

An underground mine rescue chamber is believed to have played a key role.

It was filmed on a set representing an underground mine.

Some underground mines from the 1950s remain, but are close to depletion.

This place was cramped, dark, and dirty, like an underground mine.

It is a mining city, nearby to surface and underground mines.

Mandatory inspections of underground mines would be cut from four to one a year.

These underground mines were economically operated from about 1900 to the late 1940s.

Many of the underground mines in Streator closed during the 1920s.

It is one of the largest underground mines for iron ore in the world.

The movie was a popular success with critics drawing particular attention to a scene of an underground mine being flooded.

In Taiwan, its wood is used to make support beams for underground mines.