Gravel stones offering a good likeness to coal. Even sized stones which are free of dust. Ideal as a load in railway wagons or road trucks. By mixing the coal with other stones & pebbles a prototypical gravel mixture can be achieved.
Gravel stones offering a good likeness to coal. Even sized stones which are free of dust. Ideal as a load in railway wagons or road trucks. By mixing the coal with other stones & pebbles a prototypical gravel mixture can be achieved.