collieries

the colliery employs hundreds of workers.

safety regulations in the colliery are strictly enforced.

many colliery owners are investing in modern technology.

the colliery was closed due to environmental concerns.

workers in the colliery face various health risks.

collieries have a significant impact on the local economy.

he started his career in a small colliery.

the colliery's output has increased this year.

collieries often provide housing for their workers.

new regulations are being introduced for colliery operations.