Kuala Lumpur has its origins in the 1850s, when the Malay Chief of Klang, Raja Abdullah bin Raja Jaafar Raja Abdullah,[14] hired some Chinese labourers to open new and larger tin mines for tin prospectors.[15] The miners landed at the confluence of Sungai Gombak (previously known as Sungai Lumpur, meaning "muddy river") and Sungai Klang (Klang River) to open mines at Ampang, Pudu and Batu. These mines developed into a trading post that became a frontier town.[16]