steam coal

As a result, and with a slump in the demand for steam coal, production at Mardy did not resume until late 1927.

It is rich in low-sulfur steam coal.

The Rhondda Valley was particularly known for steam coals which fuelled steamships of the 19th and early 20th centuries.

The dry steam coals of South Wales were ideal.

By 1923, producing both ironstone and steam coal:

It shipped about 46 million tons of steam coal last year, mostly to electric utilities and industrial companies.

But good Welsh dry steam coal is becoming rarer.

On the seventh day of digging with no pay, a massive seam of the best-quality steam coal was finally found.

Underneath the estate lay some of the best steam coal in the world, accessed via the new Middle Duffryn colliery.

It was formerly a coal mining community, with several local collieries mining steam coal.