the coronet phosphate company continued operating as an independent company until its purchase in 1952 by the smith-douglass corporation of norfolk, virginia. then, in 1964 smith-douglass was acquired by the borden company who, in turn, sold the company to consolidated minerals, inc. finally, that company sold the coronet facilities to two japanese firms, onoda chemical industry company, ltd., and mitsui & company, the present owners. they operated coronet under the current name, coronet industries, inc. in the course of these various changes in ownership and the change from a strictly drying operation to the institution of the cdp treatment, a concern developed in the surrounding area over whether the coronet operations were producing adverse environmental effects on the nearby housing and agricultural areas.