estimated to contain billions of barrels of oil and gas. Marib oil contains associated natural gas. In September 1995, the Yemeni Government signed an agreement that designated TotalEnergies of France to be the lead company for a project for the export of liquefied natural gas (LNG). In 1997, Yemen Gas Company joined with various privately held companies to establish Yemen LNG (YLNG). In August 2005, the government gave final approval to three LNG supply agreements, enabling YLNG to award a $2 billion contract to an international consortium to build the country's first liquefaction plant at Balhat on the Arabian Sea coast. The project is a $3.7 billion investment over 25 years, producing approximately 6.7 million tons of LNG annually, with shipments likely to go to the United States and South Korea. Production of LNG began in October 2009. The Yemen government expects the LNG project to add $350 million to its budget and enable it to develop a petrochemicals industry. Industry and manufacturing The US government estimates that Yemen's industrial sector constitutes 47.2 percent of gross domestic product (GDP). Together with services, construction, and commerce, industry accounts for less than 25 percent of the labor force. The largest contributor to the manufacturing sector's output is oil refining, which generates roughly 40 percent of total revenue. The remainder of this sector consists of the production of consumer goods and construction materials. Manufacturing constituted approximately 9.5 percent of Yemen's GDP in 2005. In 2000 Yemen had almost 34,000 industrial establishments with a total of nearly 115,000 workers; the majority of the establishments were small businesses (one to four employees). Almost half of all industrial establishments are involved in processing food products and beverages; the production of flour and cooking oil has increased in recent years. Approximately 10 percent of the establishments are classified as manufacturing mixed metal products, such as water-storage tanks, doors, and windows. Services and tourism Economists have reported that Yemen's services sector constituted 51.7 percent of gross domestic product (GDP) in 2002 and 52.2 percent of GDP in 2003. The US government estimates that the services sector accounted for 39.7 percent of GDP in 2004 and 39.3 percent in 2005. Yemen's tourism industry is hampered by both limited infrastructure and significant security concerns. The country's hotels and restaurants are below international standards, and air and road transportation is largely inadequate. Kidnappings of foreign tourists remain a threat, especially outside