"We're a coatings manufacturer and we will make coatings out of whatever quality materials are out there that we can get," Conwell says. "If the contractors want a coal tar sealer and we can get ...

IN this volume Prof. Gardner has collected a series of lectures and addresses delivered on the British coal-tar industry and allied subjects during the last fifty years. These discourses fall ...

The issue of coal tar-based products is also controversial in non-food circles. Cosmetic manufacturers in California may have to put warning labels on products containing coal tar because of their ...