A nearby coal truck had begun to lift off the ground by some unknown force and disappear into the atmosphere.

It's the snarling turbines, the hiss of steam and clutter of coal trucks and tram tracks that bring out the inner geek in me.

Coal trucks were kept from entering the city, resulting in much less coal dust.

The subterranean passages were used by coal trucks.

There are many small coal mines in the mountains, with the coal trucked to the river then loaded onto barges for shipping downstream.