The story
The company originated from a construction business founded in India by John C. Gammon in 1919. In 1955, a branch was engaged to build a new runway at Kai Tak Airport in Hong Kong. In 1958, Gammon Construction Limited ("Gammon") was formed to establish a permanent presence in Hong Kong.
Once incorporated in Hong Kong, it grew rapidly, obtaining construction work of a diverse nature. By the late 1970s, it was established as the leading contractor in Hong Kong, participating in many of the major infrastructure projects of that time. The company began to expand business outside Hong Kong, establishing offices in Singapore and Vietnam.
From Wikipedia’s article on Gammon Construction, shared under CC BY-SA 4.0.3