PDTC continued its onshore exploration away from the disputed area, drilling five more bore holes that were also dry. However, on 27 October 1960, the company discovered oil in commercial quantities at the Murban No. 3 well on the coast near Tarif. In 1962, PDTC became the Abu Dhabi Petroleum Company. As oil revenues increased, the ruler of Abu Dhabi, Zayed bin Sultan Al Nahyan, undertook a massive construction program, building schools, housing, hospitals and roads. When Dubai's oil exports commenced in 1969, Sheikh Rashid bin Saeed Al Maktoum, the ruler of Dubai, was able to invest the revenues from the limited reserves found to spark the diversification drive that would create the modern global city of Dubai.