coal mine
coal pit BrE

After a few months of school he began working in a coal mine as a boy.

The town is home to a coal mine where many of the local men work, both young and old.

At the age of 10 he began work in a coal mine.

He began working in a coal mine at age eight.

He began work in a coal mine from an early age.

There was a coal mine here in the 14th century.

Outside of football, he also worked in the local coal mine.

At the age of 10 he left school to work in the coal mines.

Trying to be a security guard for something which was no longer a coal mine.

The company is also known to have worked coal mines here.