"… of the Ponca Tribe of Indians living nearest the plant, blamed Continental Carbon Co., manufacturer of Carbon black, a product used in tires, rubber and pla …"

"… to see source of ‘fugitive’ dustTo this day, Houston-based Continental Carbon, Ponca City’s third largest employer, denies it caused most of the pollu …"

"… the plant operation are immediately addressed,” Dennis Hetu, Continental Carbon’s recently appointed president, said in an interview.State regulato …"

"… mount of time and resources investigating complaints regarding Continental Carbon, as reflected in our records,” Skylar McElhaney, a spokeswoman for the a …"