Which of the following statements regarding coal is NOT correct? |
Anthracite is the highest quality hard coal. Coal that has been buried deep and subjected to increased temperatures is bituminous coal. Lignite is a low-grade brown coal, which is soft with high moisture content. Metallurgical coal is high grade lignite coal which has a special value iron in blast furnaces. |
Metallurgical coal is high grade lignite coal which has a special value iron in blast furnaces. |