Royal Commonwealth Tour, Duke Visits Aden Oil Refinery -- H.R.H. The Duke of Edinburgh seen shaking hand with official upon his arrival at the huge Oil Refinery at Little Aden yesterday (April 27th). Nearest to the camera actually in the act of shaking hands with His Royal Highness is Mr. R.H. Sheldrake, the Resident Engineer at the Aden Oil Refinery, of the Anglo-Iranian Oil Co. Now on the last stages of their triumphal world-circling Commonwealth Tours H.M. The Queen and H.R.H. The Duke of Edinburgh arrived at Aden aboard the S,S. "Gothic" on Thursday April 27th. April 28, 1954. (Photo by Fox Photos).