"There's a reason coal tar has been made all these years: It works better and asphalt emulsion has some deficiencies." Chris Mariani, vice president of marketing for GemSeal, says the company ...

Fahrner specializes in sealcoating, providing customers in the Upper Midwest with services that include coal tar emulsion and chip sealcoating, slurry sealcoating, microsurfacing, rubberized crack ...

It is using bitumen emulsion (coal tar) on roads after cleaning dust and gravel. A thin layer of bitumen makes roads free ...