1.   A lever lid tin was used to heat coal dust, using a spirit burner.

2.   Coal to heat coal dust, using a spirit burner.

3.   He was kneeling before the fire, his hands and face black with coal dust.

4.   His face was still covered in coal dust and he looked anything but a gent.

5.   Jeff even carried out trial runs using rockets stuffed with coal dust.

6.   Though it is not yet the coal regions, the trees feel darkened by coal dust.

7.   Wilson had grown up black with coal dust.