The geologist held up a gleaming sample of kennel coal and explained how it formed from ancient swamp plants.

At dawn the coal-whipper descended into the ship's hold and began hauling up heavy baskets of coal.

At dawn, the coal-whippers arrived at the docks to load the steamship.

The museum displayed a rare specimen of Bovey coal collected from the Devon deposits.

In Victorian London the coal-meter inspected and certified each delivery at the river wharf.

The technicians calibrated the coal-meters before the shipment arrived to ensure accurate billing.

The museum's exhibit included a polished specimen of cannel coal, prized for its glossy luster and rich oil content.

The coal pushers worked in shifts to keep the steam engines running through the harsh winter.

The engineer adjusted the coal pusher to feed fuel evenly into the firebox during the long climb.

The coal train thundered past the small station at dawn, its wagons laden with coal.