Abstract: This suppressant comprises at least 45% water. A water thickening agent is dissolved in water, and forms with water the dispersion medium. A coal tar pitch is dissolved in an aromatic solvent and forms the dispersed liquid which results in suspension. The aromatic solvent has generally a residual softening point of about 40.degree.-70.degree. C. (as measured by ASTM-D-36). This dust suppressant has a viscosity of 3500 to 15000 cps at 25.degree. C. A process for making same comprises: 1- adding to water having a pH of about 7 to 9, a thickening agent to form a dispersion medium having a viscosity of at least 2000 centipoises at 25.degree. C. as measured with ASTM-D4420, with a Brookfield, 2- dispensing under high shear conditions into the dispersion medium, a pitch dissolved in an aromatic solvent, at least 70% of which is boiling over 270.degree. C., to obtain a (in concentrate form) suspension having at least 45% water content.