supply. In 1960 there were only three primary schools in Bintulu. These schools provided classes until Primary3 level. There were no secondary schools. Villagers could pursue their secondary school studies at either Miri or Kuching by using small boats as there were no roads connecting Bintulu to either Miri or Kuching. Bintulu Government Secondary School was opened in 1964. In 1967 Bintulu celebrated the first 100 years of the Council Negri meeting (Sarawak State Legislative Assembly). A stone monument was built in front of a government rice storeroom to commemorate the event. Bintulu was a sub-district of Miri Division in the 1970s. The sub-district was upgraded into a district in 1987. Discovery of oil and gas reserves Large reserves of natural gas were discovered off the coast of Bintulu in 1969. Following this, a feasibility study was done in 1975, and Tanjung Kidurong was found to be a suitable site for a deep-water port. On 14 June 1978, Malaysia LNG Sdn Bhd (MLNG Satu) was established by Petronas, a Malaysian national oil and gas company for Liquefied Natural Gas (LNG) processing at Bintulu. On 8 July 1978, the Bintulu Development Authority (BDA) was established by the Sarawak state government for infrastructure development and to promote industrial investment in the area. On 15 August 1981, the Bintulu Port Authority was established at Tanjung Kidurong, starting operation on 1 January 1983. Since the establishment of Sarawak Corridor of Renewable Energy (SCORE) in 2008, Bintulu become the gateway to Samalajau Industrial Park, which is located away from Bintulu. The industrial park is a centre of heavy, energy-intensive industry. Among the companies that started their operations in the industrial park are Tokuyama Malaysia Sdn Bhd (now replaced by OCI Malaysia Sdn Bhd), Press Metal Bintulu Sdn Bhd, and OM Materials Sdn Bhd. Ruralurban migration is significant in Bintulu because of greater job availability in the town. Since 2007, new residents have started several squatter areas in Bintulu due to inability to find affordable housing, around Kidurong Industrial estate and Sungai Sebatang. To address the issue, several low-cost housing projects were initiated by BDA and Sarawak state government to relocate the squatters. The state government planned to achieve zero squatters status by the year 2020. Bintulu also saw the rise in the number of residential and commercial properties such as double-storeyed terraced houses, terraced shopoffices, Kidurong Commercial Centre, and Time Square Shopping Mall. Residential properties