Linde resumes merger talks with Praxair, CEO resigns

By Ludwig Burger and Jens Hack FRANKFURT (Reuters) - German industrial gases group Linde has invited U.S. rival Praxair to resume merger negotiations after Praxair offered concessions on the division of power in the combined entity, defusing a dispute which led to the collapse of talks two months ago. At the same time Linde's chief executive Wolfgang Buechele has stepped down with immediate effect, Linde said after a meeting of its supervisory board on Wednesday. Buechele has been replaced by Al