	usair u has no comment on twa twa offer usair group inc said it had no comment on an offer it received from trans world airlines to buy usair for dlrs cash per share usair spokesman david shipley also declined comment on piedmont aviation inc pie usair has offered dlrs cash per share for half of piedmont s stock and dlrs in its own stock for the balance piedmont also received an offer from norfolk southern corp nsc of dlrs cash per share piedmont s board was meeting today but the company declined to say what was on the agenda a spokesman said he could not comment on the twa action a norfolk southern corp nsc spokesman said the company had no comment on twa s offer for usair or on its proposal to negotiate a three way merger between twa usair and piedmont we don t have all the details a norfolk southern spokesman said the company s dlr a share cash offer for piedmont stands he said in its offer twa said as an alternative to a merger with usair it would be interested in discussing a three way combination among usair piedmont and twa it said the three way merger would serve the best interests of the shareholders of all three companies employees and consumers reuter 
