I found myself doing alot of terraforming work lately, and couldn't help thinking about solutions to lessen the burden of such tasks, especially regarding the disposal of the soil stockpiles.
Let us burn soil stockpiles.
The average approximate soil composition is 25% Air, 25% Water, 45% Mineral, and only 5% Organic Matter.

We could make a special high temperature torch for such purpose, with a woodblock, fat, cloth, tar.
And then light the stoil stockpiles for some time, but not days long, to produce some sand and rarely a curio (named Dullite ^^)