hard coal

Examples (10)

• Hard coal, also known as anthracite, is prized for its high carbon content.
• The old furnace in the basement was specifically designed to burn hard coal.
• Power plants often use hard coal because it burns hotter and more efficiently than other types.
• Unlike soft coal, hard coal produces very little smoke, making it a cleaner fuel.
• Geological surveys revealed vast deposits of hard coal deep beneath the mountains.
• The steel industry historically relied on a steady supply of hard coal for its blast furnaces.
• Miners can recognize hard coal by its dense, glossy black appearance.
• The international market for hard coal is influenced by industrial demand and environmental regulations.
• Due to its cleaner burning properties, hard coal was once the only solid fuel permitted in some cities.
• A key characteristic of hard coal is that it contains over 90% carbon.