How do I reduce dust from driveway made of stone dust?
A very common dust control agent for road is Calcium Chloride it uses hygroscopic properties that allows it to retain water molecules.  It hydrates and forms a "liquid layer" that helps dust particles to stick and hold, this on the a road suppresses formation of dust.
The dirt roads in front of our home and surrounding streets are sprayed annually by the county maintenance to form a hard dust free road.

As and alternative a coating like Soilworks Gorilla Snot which is a biodegradable liquid copolymer that is sprayed on for erosion and dust control.
For the last 8 years the near by Marine Air Station has applied it for dust and erosion control on the training range.
As of this last summer it was started being used by the state highway department on desert areas near Tuscon/Phoenix to keep dust storms from causing traffic wrecks on the near by freeway.