10807.1 Usually used for domestic heating. 10807.2 Probably for industrial use - more rapid burning without smoking Made from brown coal.10807.1 - two rectangular briquettes of coal each with one rounded end 10807.2 - a briquet of coal made up of joined oval shapes coal, coal mining, briquettes, briquet, briquette, yallourn, yallourn briquette works, yallourn briquette factory, state electricity commission of victoria, mining