Koppers Co. charged that an investment group...

Koppers Co. charged that an investment group headed by British industrialist Brian C. Beazer violated court orders when it attempted to acquire shares in his $1.7-billion hostile takeover bid. Two courts have barred BNS Inc., formed by Beazer, Shearson Lehman Hutton Inc. and National Westminster Bank, from buying more shares in its $60-per-share bid for the Pittsburgh-based cement company. BNS said that as of last Friday, 13.9 million of Koppers’ common shares, or 53.4%, had been tendered.