coking coal
caking coal

The development included a coking coal works, which closed in 1930.

Coking coal has been found in the north of the fault.

The mine produces five million tons of coking coal per year.

It is considered as the prime centre of coking coal in the country.

It was good coking coal and 41 coke ovens were in use.

And the cost of coking coal, used in steel-making, may double.

The latter are a major source of coking coal.

Queensland exports half the world's coking coal which is used to make steel.

Total reserves are 110.7 million tons of coking coal.

It is one of the major considerations when blending coking coal for export sale.

Much of the iron and coking coal used in making steel was of low quality.

The problem was eased by the introduction of coking coal for the smelters around 1800.

Coking coal is best if it has a very narrow range of volatility and plasticity.

The construction plan also implies building a washing plan for coking coal.

Coking coal is needed to make a coke strong enough to support the burden in the blast furnace.

The ironworks used local coking coal, iron ore and limestone.

It produces up to 8 million tonnes of high quality coking coal used in steel production.

However, due to shortages of coking coal and other raw materials the iron works was running at less than half its capacity.

Supplies of iron and coking coal, although of poor quality, are adequate.

Hard coking coal is the most valuable coal used in the manufacture of steel.

Smelted copper was railed east and coking coal on return journeys.

These studies should precede the construction and operation of, for example, deep coking coal mines with a methane problem.

Only the Kaiser Friedrich coking coal mine remained in operation until 1930.

Soviet steel mills need 346,000 tonnes of coking coal a day but are getting only 200,000.

Hail Creek Mine can now produce eight million tonnes of coking coal.