Methods of and systems for controlling dust

A method of suppressing dust from a mined product or a seam, the method comprising:

• obtaining an aqueous liquid stream comprising one or more of tap water, well water, pond water, river water, runoff, or recycled water from an industrial process;
• forming an aqueous dispersion stream by delivering a surfactant composition to the aqueous liquid stream;
• mixing the aqueous dispersion stream to form a dust suppressant;
• measuring a surface tension of the dust suppressant via a tensiometer;
• relaying the measured surface tension to a controller;
• adjusting the forming of the aqueous dispersion stream according to the measured surface tension relayed to the controller;
• and
• dispensing a mist of the dust suppressant to a surface of a mined product or a seam, wherein the dispensed mist comprises a mean droplet size of about 0.1 μm to about 100 μm.