HARVEY R. MILLER, known as the dean of bankruptcy lawyers, yesterday announced that he was leaving Weil, Gotshal & Manges to join investment banking boutique and private equity firm Greenhill & Co., as a partner and managing director, effective Sept. 1.

In over 30 years as head of Weil Gotshal’s business finance and restructuring department and as a member of the firm’s management committee, Mr. Miller, 69, oversaw the creation of what is widely regarded as the nation’s pre-eminent bankruptcy practice. He is leaving just as the firm is working on the two largest corporate restructurings in American history, those of Enron Corp. and WorldCom Inc.